My photos of the moon are blurry.Mainly around the edges

peter fran

peter fran

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Peter Francis
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I've currently got my D5300 attached to my Newtonian telescope with the T-adapter.I use live view obviously when I'm focusing but part of the preview on the screen is blurred in areas and sharp in others.This seems to be more when I don't insert an eypiece into the adapter.When I put a 20mm eyepiece into the shaft the image seems a lot clearer BUT once I take the picture the image comes out in ALL instances blurry and in most a blurry moon edge when other parts of the image are sharp.I've tried different settings with the ISO and shutter speed but can't seem to get it right.I'm using a remote shutter by the way
 
Screenshot (20).png

Actually worse than I thought this photo.Hope you can see the bottom part of the image(although not great) is sharper than the rest enen though the moon was in the central position on my lcd screen
 
I would have said it's all about equally out of focus. The extra detail towards the bottom is just naturally sharper.

Not my area but this is a snap with a 70 - 300.

Untitled by Stephen.Palmer, on Flickr
 
best I could get with just a camera and lens

eGTwuol.jpg
 
peter fran said:
but part of the preview on the screen is blurred in areas and sharp in others.
Click to expand...
This and the image you posted indicate to me that your T-adaptor isn't secured squarely... if the camera sensor is allowed to tilt in reference to the image focal plane you will get a variable focus across the scene (it can be a slice in the middle, at an angle, or 1/2).
 
I had a play around with the T-adapter and various other things but still couldn't get it right.This is the best I could come up with
Screenshot (22).png
 
Tried again later on and used just my 300mm lens hand held and came up with this.Its a stack of about 6 images but I think its OK.Not as good as most I've seen but its a start.It has however prompted me to get rid of my current cheap Jessops telescope and invest in another one.
Moon.jpg
 
That last one has so much more details indeed!
Sadly I know nothing about telescope i can't advise you.
 
peter fran said:
cheap Jessops telescope
Click to expand...

'Nail', 'head', 'hit' springs to mind. Is it a branded scope, what mount is it on? Have you looked through the telescope with an eyepiece to see if it gives a good visual image? Are you using the scope as the lens or do you have an eyepiece in (even good scopes come with crap eyepieces as owners of decent scopes will buy the exact ones they want. The eyepices that came with my scope have never been out of the box). Could be crap optics/mirror (is it a reflector) needing collimating/crap focusser not allowing you to focus accurately/camera moving in its mount/tripod and/or scope locks not up to holding the camera weight................ Post an image of your setup.
 
Yes, the originals look like the mirror alignment to me. As said focus is vital as well....
 
It's all about the quality of glass, sturdiness of the tripod, and using a remote release.

Shot on my Swarovski scope attached to my X-T2. One frame, no stacking....

Moon by Steve Jelly, on Flickr
 
Thats funny, I literally took a photo of the moon the other night. Mine was with a Sony a6000 with an old 70-300 minolta lens adapted. Manual focus. Can't tell if it's decent or poor.
 

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Lefrash said:
Thats funny, I literally took a photo of the moon the other night. Mine was with a Sony a6000 with an old 70-300 minolta lens adapted. Manual focus. Can't tell if it's decent or poor.
Click to expand...

The Mino 70-300s were never especially good except for the G version, and not up to the standard of their enthusiast lenses. Even the big beercan isn't that great.
 
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