I use this combo on my TMB152 - the lifesaver for me was the Askar Backfocus adjuster M54/M48 which allows you to dial in 0.1mm increments without having to take everything off the scope to adjust. It is 18mm, with a +/- 2mm adjustment area, effectively 16-20 depending on where you set it. Superhelpful if you are having issues. Unfortunately the riccardi doesn't have a M54 option I know of, so I had to use the M48 on the Riccardi, with a step up ring to connect. (You can do M63 or M48, but not M54 unless you get a custom adapter….shame, as M54 seems very prevalent these days.)
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Jandro,
I tried this combination as well, but with a full frame camera (QHY600).
I never got descent stars and therefore sold the reducer.
With the standard SW-reducer I get perfect stars in the corners, so the issue was definitely the Riccardi reducer.
Glad you got it working for APS-C!
Chris
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Christian Koll:
Jandro,
I tried this combination as well, but with a full frame camera (QHY600).
I never got descent stars and therefore sold the reducer.
With the standard SW-reducer I get perfect stars in the corners, so the issue was definitely the Riccardi reducer.
Glad you got it working for APS-C!
Chris You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…?? I really doubt that very much, I would like to see an uncropped image with this set up, without any compression, and no AI tools used I have this scope and flattener and it barely covers an APSC size sensor.
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AstroStew:
Christian Koll:
Jandro,
I tried this combination as well, but with a full frame camera (QHY600).
I never got descent stars and therefore sold the reducer.
With the standard SW-reducer I get perfect stars in the corners, so the issue was definitely the Riccardi reducer.
Glad you got it working for APS-C!
Chris
You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…??
I really doubt that very much,
I would like to see an uncropped image with this set up, without any compression, and no AI tools used
I have this scope and flattener and it barely covers an APSC size sensor. I have this scope with flattener too, and it covers APSC size sensor very well (specs say up to full frame, but I have not tested it). If you struggle, then your scope might have an issue.
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Hey y’all, I am going to install the riccardi on my esprit 100 very soon (at starfront remote observatory). The technicians are going to set my backfocus and tilting, I am going to pick one of the values here as starting point. I have used the 1.0x flattener as of today and have had good results with an apsc sensor. I’m going to post the results as soon as the reducer is installed.
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 this is one light from my setup. Is not perfect 100% but i agree. As soon i process with Blurx the stars are perfect
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this is one light from my setup. Is not perfect 100% but i agree. As soon i process with Blurx the stars are perfect
Can’t tell as the image is way to compressed to see any stars clearly when zoomed in
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Rob Kiefer:
AstroStew:
Christian Koll:
Jandro,
I tried this combination as well, but with a full frame camera (QHY600).
I never got descent stars and therefore sold the reducer.
With the standard SW-reducer I get perfect stars in the corners, so the issue was definitely the Riccardi reducer.
Glad you got it working for APS-C!
Chris
You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…??
I really doubt that very much,
I would like to see an uncropped image with this set up, without any compression, and no AI tools used
I have this scope and flattener and it barely covers an APSC size sensor.
I have this scope with flattener too, and it covers APSC size sensor very well (specs say up to full frame, but I have not tested it). If you struggle, then your scope might have an issue. show me where the specs say that the Esprit 100 with flattener will cover full frame sensor please…?
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This is as good as I can get straight from the Esprit 100 with the dedicated flattener and un cropped, with an APSC sensor, and it’s far from perfect…(I may not have quite nailed focus) and my scope had the Zygo check and it’s properly collimated, and a very nice 0.97 strehl. Link below so you can see full res image as it’s a max of 1mb on here which is awful… https://drive.google.com/file/d/1lau0rT4lk-2gDm5jTbdi31MbPoeKzQip/view?usp=drivesdk |
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The stated image circle for the Esprit 100 w/ FF is 40mm. If the FR does not furtherly impinge on the light cone, the best image circle would be its native image circle * the FR%. The FR can only work with the light cone that it is given and then further concentrate it onto a small area. So, the best you should expect with a 75% FR is 30mm, which is a little better than APS-C (~28mm). My old Esprit w/ 2019 TSAPORED075 performed very well at APS-C.
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AstroStew:
Rob Kiefer:
AstroStew:
Christian Koll:
Jandro,
I tried this combination as well, but with a full frame camera (QHY600).
I never got descent stars and therefore sold the reducer.
With the standard SW-reducer I get perfect stars in the corners, so the issue was definitely the Riccardi reducer.
Glad you got it working for APS-C!
Chris
You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…??
I really doubt that very much,
I would like to see an uncropped image with this set up, without any compression, and no AI tools used
I have this scope and flattener and it barely covers an APSC size sensor.
I have this scope with flattener too, and it covers APSC size sensor very well (specs say up to full frame, but I have not tested it). If you struggle, then your scope might have an issue.
show me where the specs say that the Esprit 100 with flattener will cover full frame sensor please…? https://lacerta-optics.com/Esprit100hu#mNot too sure how good your German is, however, under section OPTICAL DESIGN it says (internet-translate): As far as the design is concerned: - Strehl design over 99% on the optical axis, - fulfillment of all conditions of the full apo definitions, - as well as a very well corrected field up to full format. In addition (but not what you have been asking for regarding fullframe...): https://interferometrie.blogspot.com/2014/08/100550-esprit-test-reports.htmlMany have been tested by Tommy Navratil showing that the Esprit is a solid performer with little sample variation. Of course, there might always be some... I hope this helps? Rob
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Rob Kiefer:
AstroStew:
Rob Kiefer:
AstroStew:
Christian Koll:
Jandro,
I tried this combination as well, but with a full frame camera (QHY600).
I never got descent stars and therefore sold the reducer.
With the standard SW-reducer I get perfect stars in the corners, so the issue was definitely the Riccardi reducer.
Glad you got it working for APS-C!
Chris
You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…??
I really doubt that very much,
I would like to see an uncropped image with this set up, without any compression, and no AI tools used
I have this scope and flattener and it barely covers an APSC size sensor.
I have this scope with flattener too, and it covers APSC size sensor very well (specs say up to full frame, but I have not tested it). If you struggle, then your scope might have an issue.
show me where the specs say that the Esprit 100 with flattener will cover full frame sensor please…?
https://lacerta-optics.com/Esprit100hu#m
Not too sure how good your German is, however, under section OPTICAL DESIGN it says (internet-translate):
As far as the design is concerned:
- Strehl design over 99% on the optical axis,
- fulfillment of all conditions of the full apo definitions,
- as well as a very well corrected field up to full format.
In addition (but not what you have been asking for regarding fullframe...):
https://interferometrie.blogspot.com/2014/08/100550-esprit-test-reports.html
Many have been tested by Tommy Navratil showing that the Esprit is a solid performer with little sample variation. Of course, there might always be some...
I hope this helps?
Rob That is not an official produced spec from skywatcher themselves, that is jut one dealers write up and advertising blurb on the scope, AFAIK the corrected circle with the dedicated flattener is 39mm max, and you can probably never really get to that either, in reality a couple of mm under would realistically be the best, so APSC should be fine on a good sample, but no more than that, full frame being 44mm, this scope would need some serious BlurX to get good corner stars.
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AstroStew:
You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…??
I really doubt that very much,
I would like to see an uncropped image with this set up, without any compression, and no AI tools used
I have this scope and flattener and it barely covers an APSC size sensor. Stew, if you have terrible stars on your corners in APSC you should either have your backfocus or tilt adjusted, or, if that's not the issue, have the lenses of your scope checked an collimated. My Esprit 100 has selected lenses that were collimated and tested (Ronchi test) by a professional optician - something a standard out-of-the-shelf telescope woun't have. I probably have time on the weekend to provide some original out-of-cam frames, until then, feel free to refer to my Astrobin gallery: https://www.astrobin.com/users/Austronomer76/
CS
Chris |
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Christian Koll:
AstroStew:
You got perfect stars right into the corners with an Esprit 100 and the dedicated flattener, and a full frame camera…??
I really doubt that very much,
I would like to see an uncropped image with this set up, without any compression, and no AI tools used
I have this scope and flattener and it barely covers an APSC size sensor.
Stew,
if you have terrible stars on your corners in APSC you should either have your backfocus or tilt adjusted, or, if that's not the issue, have the lenses of your scope checked an collimated.
My Esprit 100 has selected lenses that were collimated and tested (Ronchi test) by a professional optician - something a standard out-of-the-shelf telescope woun't have.
I probably have time on the weekend to provide some original out-of-cam frames, until then, feel free to refer to my Astrobin gallery:
https://www.astrobin.com/users/Austronomer76/
CS
Chris I dont have terrible stars at all with my APSC sensor, and never said that I did, they are just not perfect, see my link above to an image i took, with no processing and no cropping, it’s ok, but not perfect, there is nothing wrong with my scope at all, this is pretty normal for an Esprit and flattener, my scope was also Zygo checked and collimation was spot on. just looked at your images and they have mostly had BlurX used on them, so not really a good argument
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Stew,
I don‘t see any point in arguing with you.
Since you have apparently made up your mind anyway, I will not waste my time to bother you with facts.
Chris
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Christian Koll:
Stew,
I don‘t see any point in arguing with you.
Since you have apparently made up your mind anyway, I will not waste my time to bother you with facts.
Chris Made up my mind about what, and what facts did you tell me, I really don’t understand, you told me that I said I had bad stars, which was incorrect, then you said I either have tilt or collimation issues, again not true at all, as my scope has also been tested and checked for poor collimation, and was found to be excellent, also I have zero tilt now after it being all adjusted out, these are things I have already said and you obviously have not read. then you told me to see your gallery, which are images fake with this scope, true but they have had AI used in them, so don’t tell me anything about your scopes capabilities. I fail to see the facts here you were trying to educate me with…??
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I got my Riccardi Installed on the esprit 100 and the tilt adjusted (still not perfect but acceptable, blurxterminator will do). My back focus is at 78.8 mm. Sensor is IMX571   |
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0.00
5.93
0.90
1.51
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0.90
1.20
