Ricoh GXR: A12-50 Attached to Telescope (1)

Prolog... | Eyepiece and Adapters | Camera Attached to Eyepiece | Camera Attached to Telescope | Result: Photo of the Full Moon

On this page, I demonstrate how I attach the Ricoh GXR A12-50 combo to a telescope eyepiece with a T mount filter thread for astro photos using the projection technique. Projection technique means that the camera is mounted to the eyepiece, not directly to the telescope. The latter technique can only be used with SLR cameras where the body can be directly attached to the telescope - typically using a T mount adapter. I mention the 1:50 method on this site several times. This is a simple variant of the projection technique - you hold the camera by hand to the eyepiece instead of attaching it firmly...

 

Prolog...

At the beginning a few warnings:

 

Eyepiece and Adapters

Here, you can see the Revelation 32mm DigiScope eyepiece and the two adapters needed to mount the Ricoh GXR A12-50 to the eyepiece. A second adapter is required, because there is no T mount adapter available, which directly fits the filter thread of the A12-50 camera unit (40.5mm).You can remove the upper part of the eyepiece including the eyecup to reveal the T mount filter thread.

Left: Baader DT ring adapter M37/M40.5 (#2458027); right: Baader digital camera T mount adapter M37/M42 (#2408165)

Top left: Baader T mount adapter M42/M37; bottom left: Baader DT ring adapter M37/M40.5; right: Revelation 32mm DigiScope eyepiece

Top left: Baader T mount adapter M42/M37; bottom left: Baader DT ring adapter M37/M40.5; right: Revelation 32mm DigiScope eyepiece

Top left: Baader T mount adapter M42/M37; bottom left: Baader DT ring adapter M37/M40.5; right: Revelation 32mm DigiScope eyepiece - eyecup removed

Revelation 32mm DigiScope eyepiece - eyecup removed and adapters attached

 

 

Camera Attached to Eyepiece

Here, you can see the Ricoh GXR A12-50 attached to the eyepiece:

Detail view

Complete view

Detail view

Complete view

 

Camera Attached to Telescope Heritage P130

Here, you can see the Ricoh GXR A12-50 attached to the Dobsonian telescope Sky-Watcher Heritage P130:

More or less complete view

Detail view

View from front

View from front

View from front

 

 

Result: Photo of the Full Moon

Finally, here is a photo of the full moon with some additional sharpening that was taken with the equipment shown above (April 27, 2010):

Photo: Photo of the full moon

Please note that the 32mm is a wide angle eyepiece with a low magnification of about 20 at the Heritage P130 (it would deliver a magnification of about 40 at my Meade 10" Dobson telescope). Such a low magnification is not sufficient for photos of planets. Therefore, I looked for a solution to attach the GXR A12-50 combo to my Baader Hyperion eyepiece having a focal length of 5mm (130x and 250x magnification) - and found it.

 

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27.12.2011