#21  
Old 17-01-2018, 05:33 PM
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???? Supposed to be with earlier post.
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  #22  
Old 17-01-2018, 05:36 PM
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I am trying to load a photo ???
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  #23  
Old 17-01-2018, 05:36 PM
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Not working??
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  #24  
Old 17-01-2018, 05:48 PM
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If you are taking the 61 mm from the edge of the paper in the picture you uploaded you should be close to the back focus distance as you need to measure from the back edge of the flattener, so include that ring between the camera and the flattener body in your measurement.

Its a bit hard to read the measurements and I might have misread them.

Brian
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Old 17-01-2018, 05:51 PM
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Sorry that top measurement needs to be 5 mm to the left approx.

But it seems the chip must be 5.5 mm too far out...
Alex
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Old 17-01-2018, 05:53 PM
brisen (Brian)
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I think you are right so somehow you need to lose 5.5 mm. having been down this road with a new CCD its a tedious task.

Brian
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Old 17-01-2018, 05:55 PM
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Manual hopefuly is wrong.
Alex
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  #28  
Old 17-01-2018, 05:58 PM
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Having problens wuth photo uplad sorry.
Alex
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  #29  
Old 17-01-2018, 06:04 PM
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Taking from back of focuser the numbers add up..
Must be the polar align as BigJoe suggested...I was going to put the level on the mount the other day to do the Sun alignment so I sortta think I did it...but I have not checked it...it could be that simple.
Hopefully.
Anyways I dont care if I am out there only talking dark frames.
It depends on the clouds...any time is useful in adjusting stuff.
Should put the 8 inch on and see if it shows similar which would confirm level I would think..
Alex
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Old 17-01-2018, 06:07 PM
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That photo from the manual has to be wrong...
Alex
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Old 17-01-2018, 09:07 PM
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The Esprit 80 manual online shows 66mm flattener to sensor distance.

http://skywatcher.com/download/produ...d-apo-triplet/
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  #32  
Old 20-01-2018, 06:47 PM
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Quote:
Originally Posted by Camelopardalis View Post
The Esprit 80 manual online shows 66mm flattener to sensor distance.

http://skywatcher.com/download/produ...d-apo-triplet/
Thanks.
I am convinced from all my measuremnts that the sensor needs to be 5.5 mm closer to the flattener..I think Micheal did not get it right notwithstanding he tried...It seems to need a different fitting and hopefully we will sort it out on Monday.
I tried the scope without the flattener and all I can say is it was hopeless with elongated stars almost to the center of the capture...
It will work out I hope.
But such a nice size scope..so much easier to manage than the 8 inch.

alex
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Old 21-01-2018, 11:00 AM
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Did your scope not come with the extender that threads on camera-side to the flattener? This is part 3 in the diagram in the manual. Adding the Canon/Nikon T-ring would give the correct spacing, as the Esprits were designed - and shipped with adapters for - DSLR use straight out of the box.
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  #34  
Old 24-01-2018, 12:35 PM
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Quote:
Originally Posted by Camelopardalis View Post
Did your scope not come with the extender that threads on camera-side to the flattener? This is part 3 in the diagram in the manual. Adding the Canon/Nikon T-ring would give the correct spacing, as the Esprits were designed - and shipped with adapters for - DSLR use straight out of the box.
Its seems they did not get it right at least in my case or at least when Micheal put the bits together at the shop or when I put the bits tigether at home something was certainly wrong.
Yesterday I removed the spacing and part of the t ring and was able to get the measurements stated in the apparently correct version of the manual (not the one that came in the box).
Now the t ring is held on not by a thread but by the three screws that held in the inner ring and they bite straight into the thread from the flattener.
It does not seem correct but certainly that was the only way I could the the distance.
Last night I gave the scope a run and looking at my image, one hour at 30 seconds on the flame and hotse head region, the stars are as I would expect nice and round.
Hopefully I can post an image of my efforts but I cant get around to processing past a deep sky stack.

And I must say Don from Bintel was most helpful and treated my concerns with respect and kept in contact thru the process.
It is in these situations one appreciates buying from Bintel.
As all could appreciate my heart sank when I first saw those elongated stars and believe me I was very happy to know if there was an unsolvable problem I was dealing with Bintel.

The current set up is not ideal and it makes me nervous that three timy screws hold the camera in place...If I cant get a proper fitting I will literaly glue the thing on...hopefully using a glue that is soluble in something should I ever want a different camera.
But the march is forward and at least last night I got to use it.
Alex
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  #35  
Old 24-01-2018, 12:58 PM
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Here is last nights effort.
The framing is off but I was not expecting to be able to image so I just had to leave the camera where it ended up after the adjustments.
I thought I would get maybe a couple of test shots but happily the clouds let me get an hour...a little cloud two streaks say a few frames unusable but I present my result with no further excuses.

But the point of this image is to see how the stars have improved..hopefully..
Alex
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  #36  
Old 24-01-2018, 04:53 PM
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Alex, could you post a picture of your flattened and imaging train?
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  #37  
Old 24-01-2018, 06:31 PM
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Sure.
Alex
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  #38  
Old 02-02-2018, 04:38 PM
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My setup worked well with a Canon dslr which has 44mm distance to the chip (from memory). Since the Nikon is 46.5mm a thin Nikon T-ring screwed onto the flattener adapter should work.
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  #39  
Old 02-02-2018, 10:59 PM
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Thanks for posting your set up Tony.
I have not got to Bintel to see what they suggest...so I havent glued anything yet.
Alex
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  #40  
Old 03-02-2018, 10:27 AM
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Glue

The threaded adapters should make it perfectly secure.

From the back edge of the metal piece on the camera side of the flattener, the back focus is 55mm. I would suggest you find a slimmer T adapter to reach that target backfocus. Tasco should be advise where to source one for a Nikon.
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