Ricoh GXR: A12-50 Attached to Telescope (2)
Astronomy | Ricoh GXR | Photos | Conference Places | Calendars | Desktop Motives | Art | Miscellany
Prolog... | Eyepiece and Adapters | Camera Attached to Eyepiece | Camera Attached to Telescope | Result: To Be Provided
On this page, I demonstrate how I attach the Ricoh GXR A12-50 combo to a Baader Hyperion 5mm telescope eyepiece with a 53mm 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:
- Special care must be taken that the front lens of the camera and the front lens of the eyepiece do not touch and damage each other! Baader delivers special distance rings allowing to increase the distance between camera lens and eyepiece (see below); in my case they are not needed.
- If you need to use several adapters rings and attach these to the camera lens, you are in danger of tightening the rings too strongly so that you cannot separate them from each other when disassembling everything. Particularly, the DT ring may stick either to the camera lens or to the adapter to which it is attached - I experienced already both cases... As I do not like to grasp the adapters with tongs, I used a rubber blanket from our kitchen gear (used for opening glass containers or bottles) for separating adapters - with success. However, special tools for unscrewing the adapters would be much more helpful...
Eyepiece and Adapters
Here, you can see the Baader Hyperion 5mm eyepiece and the three adapters needed to mount the Ricoh GXR A12-50 camera unit to the eyepiece. The first two adapters are needed to step down from the 53mm filter thread in the eyepiece to 37mm - the first one being just an extender, which prevents that the lenses do touch. A third adapter is required to step up from 37mm to the 40.5mm filter thread of the A12-50 camera unit.
Top and bottom left: Baader Hyperion Extension Ring SP 54_i / SP 54_a (#295 8090); top and bottom right: Hyperion DT ring SP 54_i/M 37_a (#295 8037); center: Baader DT ring adapter M37/M40.5 (#245 8027) |
Top and bottom left: Baader Hyperion Extension Ring SP 54_i / SP 54_a (#295 8090); top and bottom right: Hyperion DT ring SP 54_i/M 37_a (#295 8037); center: Baader DT ring adapter M37/M40.5 (#245 8027) |
Bottom left: Baader Hyperion Extension Ring SP 54_i / SP 54_a (#295 8090); bottom right: Hyperion DT ring SP 54_i/M 37_a (#295 8037); top center: Baader DT ring adapter M37/M40.5 (#245 8027) |
Left: adapters (see photo left); right: Baader Hyperion 5mm eyepiece (without eyecap) |
Left: adapters (see photo above); right: Baader Hyperion 5mm eyepiece (without eyecap) |
Left: adapters (see photo above left); right: Baader Hyperion 5mm eyepiece (with eyecap) |
Camera Attached to Eyepiece
Here, you can see the Ricoh GXR A12-50 camera unit attached to the Baader Hyperion eyepiece:
Complete view |
Complete view |
Detail view |
Complete view |
Camera Attached to Telescope Heritage P130
Here, you can see the Ricoh GXR A12-50 camera unit attached to the Dobsonian telescope Sky-Watcher Heritage P130:
Complete view |
Detail view |
Complete view |
Detail view |
|
View from front |
View from front |
|
View from front - detail view |
View from side |
Result: To Be Provided
To be provided
The Hyperion 5mm eyepiece achieves nearly the maximum magnification with the Heritage P130. Therefore, it is much better suited to photos of planets and details on the moon that the Revelation DigiScope eyepiece (32mm focal length).
|
made by  on a mac! |
|
| 27.12.2011 |  |
