4" APO Refractor Shootout

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This is a four inch refractor, and this is a four  inch refractor, and this is a four inch refractor,   and this is also a four inch refractor. So why are  they priced so differently? Well on paper these   all sound great for astrophotography/ We really  need additional tests under the stars in order to   make an informed decision. So that's my plan for  this video. I'm going to try all these telescopes   out one night - compare them when it comes  to: features, build quality, and of course an   image comparison. The image comparison means we're  going to shoot all of these telescopes on the same   night, with the same camera, the same mount, with  the object high in the sky. And you may have seen   some previous telescope shootouts on my channel  well I'm always trying to step up my game when   it comes to testing telescopes. So for the first  time, in this video, I'll be testing these four   telescopes with a small pixel, but full frame,  color astronomy camera: the ASI6200MC, which is a   very demanding imaging test for a telescope  and it should clearly show us some differences. Hi, my name is Nico and this channel is all  about astrophotography. And today I'm reviewing   four inch refractor telescopes all four of these  telescopes behind me actually can be used visually   with an eyepiece but I didn't test them that way  because it's just not my personal expertise there   are other telescope reviewers like Ed Ting here  on YouTube who I'd recommend you check out for   that kind of thing my reviews are only going to  cover uh telescopes from a photographer's point   of view so I'm always just going to put a camera  on the back of them I did not personally purchase   any of these telescopes they were all requested by  me for the purpose of this review video so let me   quickly disclose who lent me each telescope I do  these disclosures for all of my reviews towards   the beginning of each video and it is part of my  published review policy the Founder Optics FOT106   was lent to me directly by founder Optics which  is an awesome smaller company that specializes   in refractors I previously reviewed their 86  millimeter refractor so if you're looking for   that one you can find that review the sky Watcher  esprit 100ed was lent to me by All-Star telescope   which is a Canadian telescope store but they  now do have a U.S Distribution Center which is   great for me in the US because it makes shipping  much easier and also even now just browsing their   site it will show you the prices in US dollars if  you're in the US or Canadian dollars if you're in   Canada so they've made some nice improvements  and thank you very much to All-Star telescope   America for the loan of this spree 100. the askar  103 apple and the various flatteners and reducers   was lent to me directly by askar and I really  value my relationship with askar they're really   great about loaning me their new telescopes for  review so I've reviewed several of them on the   channel over the past few years and last but not  least a relatively new relationship is with zwo   who lent me both these zwo ff107 Apple telescope  and the ASI 6200mc camera that I'm using to test   all these telescopes so a huge thank you to  zwo and with all of these borrowed items the   companies have no say in what I share in these  reviews the agreement is that I get to try out   the telescopes I say whatever I want in this  video and then I send them back or occasionally   I'll buy the telescope directly after the review  is published but that's just if I personally want   the telescope for something okay that's it for  the disclosures for this one something I often   forget to emphasize with these telescope reviews  that is really important if you're a beginner is   these telescopes can't be used for deep sky  astrophotography without the proper Mount and   for a telescope of this size a four inch or 100  millimeter refractor you can expect the tracking   Mount to cost just as much if not more than the  telescopes self so you really need to think of   this telescope as one part of a system and each  part of that system has to work together to get   good results for deep sky astrophotography  for four inch refractors I'd recommend the   sky-watcher eq6r that I'm going to be using  for the testing in this video or amount with   a similar weight capacity like an ioptron cem-40  or if you want a harmonic Drive Mount a zwo am5   should work for these two okay next let's look  at the physical characteristics of each refractor   and we're going to see what's included all of  their weights and dimensions all the features   and build quality okay this is the askar 103  Apple this is a new telescope on the market   it is a triplet design with one Ed glass element  in that triplet none of the flatteners or reducers   are included but they're all available at a pretty  affordable prices so I have here the 1X flattener   installed so let's just measure the length with  the do Shield out but the focuser in and that   length to the back of the flattener we have 77  millimeters or about 30 and a half inches with   the front cap off with the 1X field flattener  installed the askar 103 APO weighs 5730 grams   or 12 pounds 10 ounces okay and then here is  the case that it comes with this of course was   packaged in more padding and a double cardboard  box you can see it's like a soft side on the   outside with a nice diagram of the telescope and  then on the inside you have this nice thick custom   cut high density foam that fits the telescope  really well and this is you know you need the   focuser and the Dew Shields closed down and the  visual back on to make it fit just like this with   the extension in there as well now uh if you've  seen the review of The ascar V that included the   different reducers and extenders and stuff so  there were cutouts for those in the case that's   not the case with the 103 Apple since all of those  are optional accessories so they don't put any   kind of cutouts for those with this case it comes  with this Vixen style dovetail plate that's plenty   long and it has a bunch of holes in it the Rings  are fine they're not super thick or anything but   they they work and you guys you can see all the  colors are sort of this orange with black and   white and some red to Accents as well and then on  top here of the Rings it does come with this nice   place to put your guide scope or finder scope but  also has two cinta style finder shoes back here   let's rack out the focuser so I don't know if you  can hear that I'll just be quiet here for a second but that that sound is sort of the sign  of his like it's not silky smooth in terms   of being a rack and pinion focuser it's it  sounds like there's like a little bit of uh you know friction there or something but uh it  works it's just a little bit doesn't feel like a   premium premium focuser in terms of travel on the  the focuser it comes out to a hundred millimeters   so nice and long it is indexed both there and for  rotation I had no issue with the manual Rotator   it feels really good has just sort of the right  amount of friction on the manual Rotator so that   it feels like it's gonna stay solid and not like  rotate too fast but it's also not hard to rotate   in terms of build quality I'll just mention a  couple things that uh were a little concerning okay so the first is and I  can just I've left this loose   this uh of course focusing knob just sort of  came right off on me as I was testing it now   there's a set screw in there to hold it on  so all I'd have to do is just get the right   kind of Allen wrench and and put that back onto  the knob here I just thought it was funny that   it just came off might have just been a weird  coincidence and then the other thing I noticed is with this field flattener I  don't know if you can see this but   I'll try to show it to the camera here it's like  this sort of like delamination so I think this   should all be matte black but instead we have some  parts where the matte black coating uh isn't matte   anymore it's sort of like glossy so I'm not sure  what happened there but I'm not I haven't seen   that on any of my other askar stuff so I thought  I'd I'd mention that okay and then in terms of   this being sort of like a system telescope it is  very convenient so if you want to move from the 1X   flattener to the 0.8 X reducer flattener all you  do is just unscrew it and then the 8X 0.8x reducer has the same threads it goes in like that  and the they both have 55 millimeter back   focus with of course 48 millimeter threads on  the back there so it's going to be really easy   to put any kind of camera on whether you're  using the flattener or the 8X reducer 0.8x   reducer now if you want to use this reducer the  0.6 X reducer which brings this scope down to F4   you do need to remove a piece of the telescope  here and ask our made it look like in their   instructional video that this is going to be  really easy to take off I found on mine it was   really sort of stuck on there and so I did need  to use a strap wrench to get this piece off in   order to shorten up the telescope so I could use  this 0.6 X reducer so just something to keep in   mind uh I felt like it was like I couldn't do  it with just my hand alone even following their   instructions but with a strap wrench it did  come off pretty easily with the strap wrench   and then I was able to use this reducer  as well next we have the founder Optics   fot106 this is a Ed APO triplet design with a  dedicated field flattener that comes with it   and from I've attached the field flattener  here as you can see here and from the extended   do Shield to the back of the field flattener  it is 69 millimeters or about 27 and a half   inches long front cap off but the field flattener  installed the founder Optics 106 weighs 6724 grams   or 14 pounds 13 ounces here's the  case it's a nice hard sided case   with the style of latch has a handle here on the inside we have foam and some different  accessories some of these I didn't put on but   uh it would be nice for instance it comes with  a nice top handle if you want to install that   it has m42 or M48 adapters for the field flattener  this is the original um adapter for you know using   eyepieces or the field flattener that's a sort of  a roto locking kind of system I took this off in   exchange for the threaded adapter but it does  come with it all the other stuff was packaged   with the telescope but you can't fit it back  in once you've put it into Imaging mode like   this you would need to sort of disassemble the  telescope take off the dovetail and compress   the the Rings so to fit it back in the case here  so we have some nice substantial Rings here with   attachment holes on the top and a vixen dovetail  it's a little bit short but I think you know long   enough that it should work well the focuser seems  really nice and it's really smooth it's like a   super smooth experience with the focuser no sort  of scratchiness there all it's a rack and pinion   it goes out to 95 millimeters of travel and it  does have a manual Rotator back here that is also   nice and smooth no indexed marks for rotation  um that's that is one thing that's missing   the standard way to connect the field flattener  is with this sort of Roto lock kind of thing   that they they include but you can buy this  accessory which I do recommend for Imaging   which is a threaded adapter so it threads into  the focuser threads into the field flattener   and I think that's going to give you a better  experience with less tilt this is a standard   two inch style field flattener and they do include  adapters for both 42 millimeter and 48 millimeter   back here it has the standard 55 millimeter  back focus and the entire focuser assembly   is rotatable there's a lock right here for that  so now it's locked but if I unlock that you can   see I can rotate the focuser and the nice thing  with that is if you need to get these um focuser   knobs you know out of the way or you want to put  them on top like this and here I can show the   really Innovative lock system it has it's just a  really nice feeling little big knurled knob there my one issue with it and it's just it's  more just like a learning thing is if you   if you get to a certain Focus position if you  just do this just finger tight it's going to hold   but if you go a little bit further  I don't know if you can see this   see it just moved a little bit so if I really  lock this down as I'm sort of just accustomed   to doing then it actually changes the focus  position so you either would have to then you   know hold the focus position while you're locking  it or just get accustomed to don't lock it down   so hard that you actually move the focus position  when locking the focuser I gotta say the the both   the focuser rotation and this camera rotation  are super smooth they just feel really good   nothing nothing sort of rattly about them they  lock down really well so everything about this   telescope in terms of build quality I gotta say  is really a high-end experience here's the zwo   ff107 Apple the FF means full frame the apple  means it's an apochromatic refractor this is an   astrograph meaning the field flattener is built  into the design and it is 76 millimeters or 30   inches long with the do Shield out but the focuser  in with the front cap off the zwo ff107 APO weighs 6966 grams or 15 pounds 6 ounces here's the  case that it comes with you can see it's uh   hard style case with latches  on the front and a handle   but actually I handle both here and here and  this is what it looks like packed you can fit   the whole telescope in without taking off the  Rings or The dovetail you do have to put the   visual back on and back the focuser in and all  that it has slots here for the Imaging adapters   uh the foam feels a little cheap it's like sort  of like a medium density uh foam that that sort   of bent already but the cutouts are nice it's  it's well thought out and I do like that you   can keep the telescope roughly assembled with  the Rings and everything and still pack it away   in this case you can see it comes with some nice  uh Rings here and a top handle it comes with a   vixen style dovetail that's nice and long all of  this is you know red accents of course with zwo   and the focuser looks substantial it's a rack  and pinion design it is indexed both in terms of   travel but also rotation here and it is about it  goes out to about 86 millimeters of travel there   in terms of locking it just has the typical little  little thumb screw down here for locking the focus and it just Mo it just moves it just a hair  so you one thing you can do when locking   the focus if you're focusing manually is  just to once you find Focus just hold on   to it and then lock it and that should  work pretty well um it offers full 360   degree rotation back here this is the  style of manual Rotator I like the most   um now any kind of Rotator can introduce  tilt into the system this one included   um I haven't seen it on many of these uh sharp  star style Scopes but it might happen this is   for locking the rotation of course and then you  have the little indexed Mark right there so what   I really like about this is if my software tells  me okay rotate 30 degrees counter clockwise I can   say okay I'm at 10 so I'll go to 340 and then lock  it down and it works really well that way it has a   normal Center style finder shoe bracket right here  and screws for another one if you need and that's   about it every ever all the mechanics seem really  nice uh the build quality seems good so not much   to complain about very standard kind of Imaging  telescope here there's a 0.7 x reducer available   for the zwo ff107 Apple I have it right here the  way that it installs is you take off all of these Imaging adapters here and it goes into the focuser like this and then it includes these adapters so you have 55  millimeters of back focus off the final threaded   adapter here which is a 48 millimeter diameter  okay here's the sky Watcher esprit 100 Ed this   is a super APO triplet meaning that it has two  of the three glass elements in the triplet two   are this FPL 53 super extra low dispersion glass  that's very desirable for imagers especially but   also visual too and then it comes with this  dedicated field flattener which also uses ED   glass which I've attached back here now if  we measure from the front to the back of the   field flattener with the focuser in it measures  about 64 centimeters or 25 inches with the front   cap off but the 1X field flattener installed  the skywatcher spree 100 weighs 7282 grams   or 16 pounds one ounce okay here's the very  interesting case that the esprit 100 came   in it's a sort of oversized hard sided case with  these latches on the front on the inside there's   all of these racquetballs these little inserts  for them but they do come out if you want to play   around with them and this is just to really  protect the the telescope here that's where   they all are located is in the telescope part of  the the Box you do have to completely take apart   the telescope to fit it back into the box right  because even with the Rings and The uh dovetail   plate on it's not going to fit back in so you have  to completely take those off there are inserts for   all of the different stuff that it comes with but  you basically have to do a complete disassembly to   fit it back in here oh and I while we're in here  I should just point out that uh this telescope   comes with a bunch of extras so it comes with  a really nice little diagonal here for viewing   it comes with a 48 millimeter t ring for  Canon it comes with a visual back of course I've already mentioned it comes with the field  flattener it also comes with a little Sky watcher   right angle corrected finder so pretty  cool little accessories especially if   you're planning to ever use this scope visually  it comes with this short lazmandi style dovetail   plate I was a little bit uh skeptical of it  but once I put my camera and stuff back here   everything balanced very well with this telescope  it has very nice beefy Rings here and the focuser   seems incredibly well made it's a 3 3.4 inch  rack and pinion focuser very smooth going out   it does have indexing millimeter indexing here and  so we can see it's a 90 millimeter travel on the   focuser there this is a captain's wheel it's  a little bit sticky but if you loosen that up   and the focuser is all the way racked out like  I just did here you can actually move the entire   the rotation of the entire focuser now this is  not the primary way to do camera rotation with   this this is more if you for some reason wanted um  for clearance reasons wanted the focuser in this   position so that the knobs are up here you can  do that and then once you've done that you just   lock this Captain wheel back down and that's now  locked in this position this is the focuser lock   and this is one of the best focuser lock designs  I've ever used it's so easy to find Focus right   holds well and then I just bring this little  lever down to lock focus and it does not move   the focus position so right so if I get fine  focus one of the very annoying things is with   a lot of these Focus lock designs you start  twisting them and it actually slightly moves   your focus position this lock is perfect so  if you are manually focusing the esprit 100   it's a very good focuser for that now this  is where we get camera rotation and I'm not   sure about this design if I really like it so  much because it seems a little bit hard to use   in the night but it's two rings so you loosen the  back ring that lets you rotate the camera however   you want and then you tighten this front ring and  that's the locking ring and now well not quite   there there we go so now rotation  is locked so to get it back you know I'd have to you have to sort of do you  have to sort of use both hands and go in opposite   directions and then you can loosen it up again  rotate the camera and then lock it back down   the the two things I don't like about this is  it seems sort of hard once you get it really   locked to unlock it and then also there's  no indexing for rotation okay here's the   field flattener it seems to work quite well  it comes with the telescope and I like that   it's fairly customizable it actually has  63 millimeter back focus from here which is these larger 68 millimeter threads um but then  it also comes of course with a little adapter to   bring you down to 48 millimeter threads and this  adapter is eight millimeters in thickness so from   from here the 48 millimeter threads then you have  the standard 55 millimeter back focus and that's   how I used it with the adapter but if you needed  that extra eight millimeters of space you could   take this off and have an extra eight millimeters  there to play around with so that's that's very   nice okay and now last but not least we are on  to the imaging test here are the tech details for   this Imaging session I won't spend too much time  with these because they're pretty much my standard   testing regimen in terms of shooting with no moon  out in the middle of the night when the object is   high in the sky using my sky Watcher eq6r Mount  I always do five by five minutes for this kind   of telescope testing uh the the reason I don't  do longer Integrations is so that uh you know I   can capture the object quickly enough that it's  in this basically the same part of the sky and   we're not having as much atmosphere differences is  the only thing that really changed this time which   I mentioned at the beginning is instead of the  2600 MC which I used for the past two I think I'm   now using the 6200 MC on loan from zwo which is  pretty cool because it's a full frame camera but   with small pixels so this should be the ultimate  in showing us sort of the differences when when   we're talking about telescope Distortion it's it's  also you know something that's that most people   I wouldn't really advise but it's just if you're  interested in this kind of thing telescope testing   I think this is the ultimate kind of camera to  test with right now okay the first thing we're   going to look at here is a single frame from  each telescope I tested at Native focal length   and the main thing I'm looking at here in a single  frame is just how well the telescope illuminates   a full frame sensor and so here's the askar 103  you can just see a tiny bit of darkening in the   the very Far Corners there's the founder Optics  106 a little bit more darkening in the corners   there's the zwo 107 about the same as the askar  and there's the esprit 100. which is pretty good   too um just a little bit in the corners but a very  gentle roll-off more so than the others I think okay and then this is now with flats and stacked  and you can see that once you add Flats uh to or   once you take flats and calibrate with them  um it really takes out any of that vignetting   and you know some people are worried about  signal to noise ratio in the corners I've   never really seen much of an issue with that  so uh if a telescope doesn't fully illuminate   into the the corners like that I always take  Flats so it really doesn't matter much to me   you'll see the esprit results are not rotated  quite the same as the rest I just had a little   bit of trouble with the way that the Spree  rotation system works so I didn't really try   to get it rotated the same uh well with these it  was easy to to rotate the camera the same way the   next thing we're going to look at is the stars in  the corners and the center and I make I make these   uh reports with a script here in pixinsight  under image analysis it's called aberration   inspector and we'll first look at the stars in the  corners and the center with the full frame sensor   and so here's the askar 103 this is again  with the 1X flattener native focal length   and it looks pretty good I mean there's one  bright star out here that you can see looks   a little distorted it has a line through it but  other than that I think this looks pretty decent now we can compare here to the founder Optics   f ot106 maybe a little bit more Distortion you  get a little bit of like a cross star even with   medium-sized Stars and up here I'm not sure if  this is uh tilt or just Distortion but we are   seeing a little bit of elongation in different  places okay then here is the zwo 107 and you can   see it has some like weird reflection artifacts  going on if we look back at the full stack you   can see there's a couple up here on this corner  and one pretty noticeable one down here and those   did show up in all of my frames I don't know  if it was something just with my telescope   or or what but uh yeah I did notice these weird  reflection artifacts on full frame with the zwo   I'd also say that the stars look a little bit  soft in the corners compared to these first two and then here's the esprit 100 uh I'd say  it's it's a very sharp telescope the Far   Corners look pretty distorted now they do  look sort of all radiating in which would   suggest that the back focus wasn't correct but  I am positive I did it according to the manual   uh so but it looks like I need more back focus  based on the stars all radiating out like that   however I'm not sure how good the Stars would  be in the corner with full frame on this spree   anyways because if we look at them a little  bit closer you can see in addition to being   elongated they're also crossed right they have  the little uh cross across each star so even if   these were a little bit less elongated I'm still  not sure they would be really like acceptable for   a Discerning imager and then next we're gonna  I what I did was I cropped down the full frame   to the size of aps-c and I think this is going  to be illustrative because a lot of people have   maybe like a 2600 and Asi 2600 and this will  show you what that would approximately look   like so here's the askar 103 in the corners in the  center it looks good it looks a little boring like   the Stars aren't um very colorful that might  just be because it's on the slower side at   F 6.8 so there wasn't enough time for much  color to add up here is the founder Optics 106   um we definitely have a little bit more  Distortion than the askar scope here   the colors to me look a little bit better though here's the zwo 107 that looks pretty good and  here's the Esprit 100 and there are you know   some plate scale differences here because for  instance the zwo we were at 749 millimeter focal   length and the Spree were at 550 so it's a pretty  big difference so while this may look sharper it's   it's really just because there's more stars in  each box right so then they're more zoomed out so   then they end up looking sharper than some of the  other results what I'm looking at here is a crop   into Center and what I did was I stretched each  one just with a normal kind of arc sign stretch   and then I saturated each one quite a bit because  I wanted to see color differences and see what   we could see in terms of color differences and I  thought it was pretty interesting I thought that   the the founder Optics and the esprit had richer  colors while the askar and the zwo had slightly   more muted colors now with enough integration  and processing I'm sure that could be overcome   but it's just something I noted noticed is that  the founder Optics and the esprit seem to have a   little bit more natural blue uh come through well  it seemed a little bit more cut off in these two   especially in the askar 103 like it just feels  like not enough blue is is coming through on   that glass okay so keep in mind these are really  saturated for the amount of integration here so   you are seeing a little bit of like color fringing  uh on the Spree in the founder Optics but I don't   think that's anything serious in terms  of chromatic aberration I think that's   just because I really saturated these  to try to see the color differences   um and with these two we're just not uh seeing as  much of that color because they're slower Scopes   right other than that very similar in terms of  critical sharpness here I don't really see a big   uh difference maybe they'll see something  more than I am I would say that for the fact   that this the Spree is at 550 millimeter focal  length it looks just as detailed as these other   ones which means it's probably a pretty uh sharp  telescope that's about the only thing I can really   see in terms of differences here now if you're  only interested in you know these four telescopes   reviewed at their native focal lengths you could  stop watching here I'm going to go on and show   some results that I got with various reducers that  were sent to me for the ask car and the zwo scope   okay here is the askar 103 with the 0.6 reducer  so this brings it down to F4 and you can see   there's a quite a bit of light fall off um but  the zwo F f107 with its uh 0.7 x reducer has   even more dramatic light fall off like that's  that's pretty dramatic in the corners there   so for a full frame reducer it's that's uh  it's not quite really Illuminating a full   frame uh sensor I mean it is I mean we just  have a lot of light fall off in the corners   okay and then the askar point 8X  reducer is is doing the best in   terms of full frame illumination this  brings it down to F 5.6 on the ascar   103 and all three of these look quite good  in terms of the finished full-frame field and you can see this this F4 field at around 420  millimeter focal length I think we're even seeing   some of the shark nebula here we're really  getting a pretty expansive view in cepheus   okay next let's look at the aberration  inspector with these reducers here is the F4   with the full frame and you can see uh I might  have to zoom in a little bit since we're so far   zoomed out on these Stars you can see they have  quite a bit of chromatic aberration everywhere in   the field which makes it feel softer in terms  of sharpness we're getting you know just a   like some magenta and blue haloing and then  away from Center up here in the corners we're   getting sort of bird-like stars like a little  bit triangle with wings uh that you'd see   often with uh camera lenses okay here's the uh  aberration inspector for the zwo with reducer   that also has a fair amount of chromatic  aberration on the stars and the Stars again   just like this one have that sort of triangular  not quite as much Wings on the on the zwo but   they're they are pretty soft in the corners too  okay and then here is the askar 0.8 X reducer   not nearly as much chromatic aberration here and the stars look quite a bit sharper we just  have some distortion on the on the very bright   stars but the smaller stars are looking pretty  good in the corners okay and then we can look at   what these would look like with an approximation  of a crop sensor I cropped it down to the same   size as the 2600 MC and the Distortion is  basically gone the the stars look really   nice across the field there's still a fair amount  of chromatic aberration across the field with the   F4 reducer though and it mostly shows up as sort  of an extended bluish Violet Halo and then here   is the zwo full frame 107 with the reducer the 0.7  x and an aps-c camera and the Stars again look a   lot better here with a crop sensor we are seeing  sort of the classic split chromatic aberration   here or it's green on one side and magenta on the  other side of the bright star and then finally   here is the 0.8 X reducer with the askar 103 this  looks pretty flat for a crop sensor camera across   the field you just have the slightest bit of  chromatic aberration but the Distortion is   not really evident okay and then here are some  samples of what it looks like if you just stretch   a detail and and really up the saturation and  you can see the the askar 103 with the 0.6 X   reducer has a lot of violet haloing and some  magenta chromatic aberration across this sample   the zwo with reducer looks a lot better in  the center um just a just a bit of chromatic   aberration a little bit of the same thing going on  here but just much less so and then the askar 103   with the 0.8 X reducer looks pretty perfect don't  see much uh going on there now let's just compare   to a couple of the ones we looked at before so  for instance here is now in this corner over here   the ascar 103 with the just the 1X flattener  and you can see between the 0.8 X and the 1X   pretty similar result um not not a huge amount  of difference I would just say that the the   main thing I see different between these two is  the sharpness is better with the 1X flattener   but I would say the point 8X reducer and the 1X  flattener are going to be much better if you're if   you're caring about like the star quality the the  F4 is really just if you if you want to go fast   um and and then fix some of this some of these  problems in post I could also see using the F4   for narrow band that would be a great use for  it for Broadband stuff I would probably go   with this 0.8 X reducer most often okay and  then if you're considering the zwo 107 here   is without the reducer so just uh nothing  attached just the Astro graph on its own   and here is with the 0.7 x reducer and when  I look at these two I can see that the 0.7x   reducer is definitely adding some chromatic  aberration to the Stars so if we zoom in here you can see what I mean they they just have a lot  more of this sort of reddish magenta uh fringing   on them compared to this result you're now seeing  the names of everyone who supports me in this   channel through my patreon campaign the support on  patreon really means the world to me because it's   how I was able to pursue nebula photos full time  and put together complex videos like the one that   you just saw and I think my patreon community is  very rewarding if you're into this stuff because   we do a lot of fun things together like Zoom  calls monthly Imaging challenges and there's   a bunch of private channels on my Discord server  where there are people hanging out and talking   about astrophotography 24 hours a day in addition  to all that you get direct messaging support with   me so if you have questions you can ask and  I'll get back to you usually within a day or   two so I think it's well worth checking out and  it starts at just one dollar per month to join   hope you enjoyed this one until next time  this has been Nico Carver clear skies
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Channel: Nebula Photos
Views: 98,557
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Id: G1zM-lz7Fx4
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Length: 43min 23sec (2603 seconds)
Published: Fri Sep 01 2023
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