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Since the summer of 2013, the 3.2m Baader dome of Rooisand Desert Lodge has a completely new telescope configuration consisting of
  • a Astro Physics GTO-1600 GoTo mount
  • a 17 Zoll PlaneWave Astrographen,
  • a 130mm Zeiss APQ Refraktor and
  • a 110mm TEC FL Widefield Refraktor.

The telescope is mainly used for "public star gazing" for guests of the lodge, but occasionally also used by amateur astronomers for photography. The dome can also be rented by experienced amateurs.

The Planewave Astrograph has a primary focal length of just under 3,000mm (f / 6.8), but can also be used with a Fokal Reducer (0.8x, f / 5.6).


On this webpage we show a selection of reference images taken with the telescopes of the Rooisand observatory.
 17" PlaneWave Astrograph - f = 2.930mm (f/6.8) und f = 2.350mm (f/5.6)
Most of the PlaneWave images were taken together with a TeleVue 0.8x focal reducer. The telescope then has a focal length of 2,350 mm at f / 5.6 at 17 "opening.A detailed description and many test shots can be found at the website of Baader Planetarium. Cameras used was a Baader modified Canon EOS 40 DA, a modified Canon EOS 60 DA, a SBIG CCD ST-8300 Color and a CCD module ALCCD 8L. Guiding was made with a SBIG ST-i in the primary focus of the 130mm Zeis APQ refractor.The image below shows the Canon EOS 40 DA together with the TeleVue Reducer at the PlaneWave astrograph.

All pictures can be enlarged by clicking on the thumbnails. They are each opened in a separate browser window. All pictures are © 2013-2017 by Rooisand Observatory, Team Chameleon - F. Hofmann + W. Paech. Exact recording data can be found on thelarge pictures on the bottom left.

 
« The image of the Lagune Nebula Messier 8 shows the "First Light" shot at 12.08.2013. 40 single images of 30 seconds each were exposed with a Canon EOS 60 DA WITHOUT any Guiding.

The Planewave Astrograph was used in its primary focal length of 2,940mm at f / 6.8.
 
The image of the core area of ??the Orion Nebula Messier 42 demonstrates the high optical quality of the Planewave Astrograph. There are 40 short exposures per 10 second exposure time, taken on 28.3.2014 with a Baader modified EOS 40 DA.

The star-like objects in the fog marked in the right-hand preview image are gas and dust disks in which stars are being created at the moment..


These disks are also called Protoplanetary Disks (Proplyds) because they are the primeval clouds for actual or later planet formation. The Proplyds are illuminated by the light of the surrounding stars, resp.
stand out as dark dust disks in front of the bright mist background. The trapezoid stars are completely dissolved and many stars of the central cluster are visible. The modified EOS 40 DA was used here because, for whatever reason, it represents the cyan regions in the center of the nebula much more differentiated than e.g. a modified EOS 60 DA or 6 DA.

In the following further examples, taken with the PlaneWave astrograph.
 
NGC 4755- Herschels jewel box Thackeray Globulen in the center IC 2944 Core of NGC 5139 - Omega Centauri
 
Wolf-Rayet star - NGC 6164/65 NGC 6726/6727 Herschels Keyhole nebulae - NGC 3372
 
NGC 6822 - Barnards galaxy Gum 31 - NGC 3324 NGC 253 - the "silver dollar"
 
30 Doradus - center of Tarantel nebulae Messier 20, the Trifid nebulae - APOD NGC 246
 
 Zeiss 130mm APQ, f = 1.000mm
Messier 20, the Trifid nebulae NGC 6726/6727 NGC 5139 - Omega Centauri
"First Light" – 6 x 60 Sek.
 
 TEC 110 FL, f = 620mm with field flattener optic
NGC 3372- the Eta Carina nebulae NGC 3324 and NGC 3293 Messier 7 and NGC 6453
 
« NGC 2070, part of the large Magellanic cloud
 PlaneWave - Moon and Planet Images

A PlaneWave Astrograph is not necessarily the preferred imaging telescope for high-resolution lunar and planetary photography because of its large obstruction of the primary mirror by the secondairy. The still respectable image results are possible like the following pictures illustrate. The Venus image shows that the PlaneWave can also be used under daylight condition.
 
3-Mosaic from Amundsen (south pole) to Heinzel and Mee at sunrise with the great crater Clavius »

3-Mosaic from Eratosthenes and Copernicus to the crater Darney » »

3-Mosaic from Darney to Wurzelbauer » » »

All pictures taken in the focus of the CDK 17 with Celestron SkyRis video module 445 mono and Baader IR pass filter. 144 of each 1.200 raw images was added with AviStack. To load large pictures, please click on the thumbnails. All raw images was taken in September 2015.
 
Venus and Saturn, taken on September 23, 2015 with the Rooisander 17 "Planewave in Primary Focus. Click here or on the thumbnail to load a large image.

Both pictures taken with Celestron SkyRis 445 mono video module and Baader IR pass filter. 144 of 1.200 raw images (Saturn: 300 of 3,000) were added with AviStack. Final image editing with Photoshop.
Two jupiter images from August 2017. In these pictures, the primary focal length was doubled to about 6 meter focal lenght with a Baader Q-Turret Barlow lens. The color image was taken with a Celestron video module 445 Color, the monochrome image with the SkyRis 445 mono. With the SW image, a Baader IrPassfilter for Seeing soothing was also used. The two moons are Io and Ganymede (on Jupiter's Edge).

Click on thumbnails to load larger images.


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All Images and all Content are © by Wolfgang Paech, Franz Hofmann + Rooisand Desert Lodge