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Telescope accessories for the dome
instrument
A large array of optical accessories is available for
the main instrument in the dome as well as for the portable telescopes.
There is a wide choice of eyepieces (two sets for the observatory's
Zeiss binoviewer), photographic T-rings and optical filters plus a Herschel
wedge for solar observations in white light, and much more.
Download a detailed up-to-date list of accessories for the
dome instrument in pdf format.(approx. 150K)
Download specific
descriptions, e.g. of the Herschel wedge, in pdf format (approx. 500Kb, for
the moment only in german language) |
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The
"rack and pinion" focuser of the Zeiss APQ has been upgraded with a Baader
tenfold reducing mechanics (similar to "Feathertouch"), which makes precise
focusing of a webcam, a digital or CCD camera seem like child's play.
The primary focal length of the Zeiss AQP can be doubled to 2400 mm
with the help of a 2" Barlow lens from Astro Physics. |
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In
order to stop mirror shifting in the C14 - regrettably it happens all the time
- there is a Crayford focuser (focussing the main mirror serves as rough
pre-focussing) for visual observations which just needs to be screwed on.
For photographical or CCD application the focuser can simply be
exchanged for a highly sensitive, sturdy single-twist focuser with focusing
scale and 30 mm deviation (picture on the right). |
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For
reducing the focal length of the C14 from 3900 mm to about 2400 mm (f/7) a
Shapley lens with field of view flexion can be used together with the
single-twist focuser. The focal reducer is simply placed into the high end in
the back and the single-twist focuser is screwed on to it (visual observation
is also possible, but only without zenith prism).
Click here
(pdf-file, 400 Kb) for detailed assembly instructions for the single-twist
focus and other special equipment.
The 2" AP Barlow lens can also be
used for doubling the focal length of the C14. It produces good image quality
in webcam pictures of planets in the centre of the field of view. |
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The holiday chalet which forms part of the observatory boasts a
small library which includes a collection of about 40 books on astronomy.
Furthermore there is software such as GUIDE 8.0, TheSky 5.0, MAXIM DL, CCDOPS
and the RealSkyAtlas (northern and southern sky). View an up-to-date (July
2007) list of the books in pdf
format.
If your laptop develops a problem, or if you forgot to bring
it, we can also help out. We have a spare laptop with all the standard software
for planning your observations and for taking pictures with CCD cameras.
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Accessories
