Moon Afocal with a 500D

Used a 12" Dobsonian scope for this.
Produced from a 500D with no lens (Adapter to a 2" focuser), with a 2x Barlow fitted.
Shot was 3 photo's put together (HDR) and was at ISO100 1/25th. It had no tracking, about the slowest you can get it, before you get blur.

It has to be shot in Afocal, due to the fact that "prime" is no good. It can't focus at a real short length. The camera would have to put "IN" further to the scope (diagonal mirror) to achieve focus.
Does anyone know how to achieve a "macro" shot with no lens with a 500D?

Processed in CS5

You say u didn't use a lens. Afocal is using a lens. Great shot by the way...

Edsport wrote in post #11343614
You say u didn't use a lens. Afocal is using a lens. Great shot by the way...

I think he's talking about eyepiece projection.

Nice picture, great detail!

Why did you use ISO100? I'd use higher ISO and make more pictures to cancel out the noise in PP.

Awesome resolution in this image. The tiny craters and rilles are very nicely resolved.

Afocal is the transfer of a light beam through an optical device without achieving focus. The use of a telescope eyepiece with an image projected at infinity in conjunction with a camera focused at infinity is afocal photography. The eyepiece offers additional magnification than the optical device can provide. Using a lens or telescope is considered prime focus photography. In this method the light beam travels through the optical device and the focus plane falls on the camera sensor or film, whatever the case may be.

An eyepiece can be used for afocal photography, where the camera (with lens) is taking a picture of a virtual image (one that we can see) or it can be used for positive projection where the camera has no lens and the eyepiece is used to project a (focused) real image (one that can be shown on a screen). They are two different things.
If I have read this correctly, the o/p has used a camera with no lens and a Barlow in the image chain. That makes it a negative projection setup.

Regardless, the result is excellent. Well done.
What do you mean "a macro shot with no lens" ? Do you mean photos of creepy-crawlies or do you want more magnification for your moon shots ?

Excellent shot !

Nice clear shot. What brand scope is it? You need a low profile focuser by the sounds.

Afocal is from using the Barlow Lens, I couldn't achieve the above with out the barlow, it brings the focal point up an inch or 2, past the focuser, which gives the camera a chance to focus.
I did know about this problem before I bought the camera and adapter, but I have to see it to actually understand what the talk is about.
If I get adventurous, the focuser may come off, but may be sometime before I do that.

Scope is a 12" Dobson Mounted "Bintel" brand, which is also branded as a GSO in other parts of the world.

It's been very cloudy, wet and really bad seeing lately, it's very depressing this year. Handful of good nights in the past 6 months.

The photo was 3 photo's in HDR (RAW then saved as a .tiff), the clarity was changed in CS5 and played around with, hence the sharpness.
The scope is out of alignment lately and having trouble getting the same shot as above. I think I have to play a bit more.
Glad you enjoy.

SteveInNZ wrote in post #11344883
What do you mean "a macro shot with no lens" ?

I have experimented with a Point and Shoot (Fujifilm S1000fd), in macro mode it picked up the image off the diagonal mirror. (No Eyepiece in the focuser)
Though, in a sense it was again afocal, but it was the macro mode, that made it work.
I just wish the focal point was a bit higher for the 500D when there is no lens attached.

Any other mode and I had to use an eyepiece to get the camera to work. (S1000fd)