Our Rooisand Observatory is (almost) fully equipped. The telescope configuration consists of:

    • an Astro Physics GTO-1600 GoTo mount
    • a 17 inch PlaneWave astrograph,
    • a 130mm Zeiss APQ refractor and
    • a 110mm TEC FL widefield refractor.

The Planewave Astrograph has a primary focal length of almost 3,000mm (f / 6.8), but can also be used with a focal reducer (0.8x, f / 5.6 = 2,350mm).

The Zeiss APQ has a focal length of 1,000mm and the TEC 660mm. Image field flattening optics are available for the TEC.

On this page, we have put together a number of DeepSky reference images that were recorded with our telescopes.

Incidentally, the Planewave is – despite the large obstruction of the secondary mirror – also ideally suited for observing the moon and planets.

At the foot of the Observatory, there is a concrete platform with a steel mounting connected to electricity. A small motorized Vixen GP mount can be set up on this with polar adjustment. Together with a small guide scope, the mount can be used for wide-angle shots of the Milky Way, constellations and zodiacal light.

Reference images of DeepSky, moon and planets, 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 recordings were made with a TeleVue 0.8x reducer. The telescope then has a focal length of 2.500mm at f / 5.6 with a 17 ″ aperture. A detailed description and many test images can be found on the website of the Baader Planetarium company. Recording cameras were a Baader modified Canon EOS 40DA, a modified Canon EOS 60D, a SBIG ST-8300 Color and a CCD module ALCCD 8L. The guiding was done by a SBIG ST-i in the primary focus of the 130mm Zeis APQ refractor. The picture below left shows the Canon EOS 40DA together with the TeleVue reducer on the PlaneWave astrograph.

All images can be enlarged by clicking on the preview images. They are each opened in a separate browser window. Exact recording dates can be found in the large pictures at the bottom left.


The image of the Laguna Nebula Messier 8 shows the “First Light” image on August 12, 2013.

40 single images were exposed for 30 seconds each with a Canon EOS 60 DA WITHOUT guiding.

The Planewave Astrograph was used in its primary focal length of 2.940mm at f / 6.8.


This image of the core area of the Orion Nebula Messier 42 demonstrates the high optical quality of the Planewave astrograph.
There were 40 short exposures at an exposure time of 10 seconds each, taken on March 28, 2014 with a Baader modified Canon EOS 40DA.

The star-like objects in the nebula marked in the preview image on the right are gas and dust disks in which stars are currently emerging.

These disks are also known as protoplanetary disks (Proplyds) because they are the primordial clouds for a current or future planet formation. The proplyds are illuminated by the light of the surrounding stars or stand out as dark dust discs against the bright nebula background. The trapezoid stars are completely resolved and many of the stars of the central cluster are visible. The modified EOS 40DA was used here because – for whatever reason – it reproduces the blue-green regions in the centre of the nebula in a much more differentiated manner than, for example, a modified EOS 60DA or 6DA.

The following are further examples of images, taken with the PlaneWave astrograph.
Click on the thumbnails to load larger images.

NGC 4755- Herschels Schmuckkästchen
NGC 4755- Herschel’s “Schmuckkästchen”

Thackeray Globulen im Zentrum von IC 2944
Thackeray Globules within the core of IC 2944

Kernbereich von NGC 5139 - Omega Centauri
Core of NGC 5139 – Omega Centauri

Wolf-Rayet Stern - NGC 6164/65
Wolf-Rayet Star – NGC 6164/65

NGC 6726/6727
NGC 6726/6727

Herschels Keyhole Nebel - NGC 3372
Herschels Keyhole Nebula – NGC 3372

NGC 6822 - Barnards Galaxie
NGC 6822 – Barnards Galaxy

Gum 31 - NGC 3324
Gum 31 – NGC 3324

NGC 253 - der "Silberdollar"
NGC 253 – der “Silber Dollar”

30 Doradus - Zentrum Tarantel Nebels
30 Doradus – Centre of the Tarantula Nebula

Messier 20, der Trifid Nebel - APOD
Messier 20, the Trefid Nebula – APOD

NGC 246
NGC 246

Zeiss 130mm APQ, f = 1.000mm

Click on the thumbnails to load larger images.

Messier 20, der Trifid Nebel
Messier 20, der Trifid Nebel

NGC 6726/6727
NGC 6726/6727

NGC 5139 - Omega Centauri "First Light" – 6 x 60 Sek.
NGC 5139 – Omega Centauri
“First Light” – 6 x 60 Sek.

TEC 110 FL, f = 620mm with field flattening optics

Click on the thumbnails to load larger images.

NGC 3372- der Eta Carina Nebel
NGC 3372- der Eta Carina Nebel

NGC 3324 und NGC 3293
NGC 3324 und NGC 3293

Messier 7 und NGC 6453
Messier 7 und NGC 6453

NGC 2070, Teilbereich der großen Magellanschen Wolke
NGC 2070, Part of the Big Magellanic Cloud


PlaneWave – Lunar & Planetary Images

The PlaneWave astrograph is not necessarily the preferred telescope for high-resolution lunar and planetary photography because of its large obstruction in the secondary mirror. The following pictures may illustrate, however, that reputable image results are still possible.
The Venus image shows that the PlaneWave is also suitable for daylight imaging.

Click on the thumbnails to load larger images.

3er Mondmosaik von Amundsen (Südpol) bis Heinzel und Mee bei Sonnenaufgang mit der großen Wallebene Clavius
3-piece mosaic of the moon from the south-pole Amundsen to Heinzel and Mee at sun rise with at Clavius

3er Mosaik von Eratosthenes und Kopernikus bis zum Krater Darney
3-piece mosaic stretching from Eratosthenes and Kopernikus to the crater Darney

3er Mosaik von Darney bis Wurzelbauer
3-piece mosaic stretching from Darney to Wurzelbauer


Venus and Saturn, taken on September 23, 2015 with the Rooisand 17 ″ PlaneWave in primary focus. Click on the thumbnails to load larger images.

Both images were 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 stacked with AviStack. Final image editing with Photoshop.

2 Jupiter images taken in August 2017. In these photos, the primary focal length was doubled to approx. 6 meters with the Baader Q-Turret Barlow lens. The colour image was recorded with a Celestron 445 Color video module, the monochrome image with the SkyRis 445 Mono. A Baader IrPass filter was also used to calm the seeing in the b / w image. The two moons are Io and Ganymede (on the edge of Jupiter).

Click on the thumbnails to load larger images.

Rooisand Observatory Inventory List


Poster Montage Teleskope und Montierung
Poster: Assembly and Setup of the Rooisand Telescope and Mountings

Planning: W. Paech + J. Baader
Assembly: W. Paech + F. Hofmann
Client: Rooisand Desert Ranch
Supplier: Baader Planetarium GmbH


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