Author Archives: Team Baader Planetarium

  • 5.3m – Skinakas Observatory (University of Crete)

    After 35 years of operation of Baader domes on Mt. Skinakas, in autumn 2021 a 5.3m Baader slit dome joined its "siblings", the large 8m dome (built in 1998) and the smaller 3.2m dome (built in 1986), both of which are still operating without problems continuously. We are pleased to have been commissioned again to install another dome on this legendary mountain - close to the mythological birthplace of Zeus.  All domes installed there have to withstand many lightning strikes as well as extremely high wind speeds of up to 250 km/h. The previous domes, which had been erected there by other suppliers, were literally "blown away". The installation itself had something mystical about it. Bands of clouds moved over the mountain and enclosed the...
  • QHY WINTER SALE - till 31st December 2021

    Up to 20% on High-End and Beginner cameras QHY600M-PH: High-sensitive cooled CMOS Camera uses a 60 Megapixel Sony IMX455 Sensor QHY268M-PH: CMOS camera with APS-C sensor in black and white with 26 megapixel Sony IMX571 sensor, as well as the colour version QHY268C-PH. QHY294M PRO: with low-illumination performance and super low dark current with expanded Pixel Mode QHY cooled medium size CMOS cameras QHY247C, QHY163M and QHY183M / C Planteary- and Guiding cameras: QHY-5-III-462C, QHY-5-III-485C, QHY-5-III178M & die QHY 5-II Series     High-end cameras for professionals and advanced users: #1931162    QHY600M-PH     UVP €  5.250,00    Special price  € 4.725,00 #1931096    QHY268M-PH     UVP €  2.698,00    Special price € 2.428,20 #1931140    QHY410C-PH      UVP €  4.160,00    Special price € 3.744,00 #1931060...
  • Test review: BAADER ULTRA NARROWBAND FILTER, Francesco di Biase

      Mr. Francesco di Biase had the opportunity to test the new Baader Ultra Narrowband Filters 36mm in unmounted version in his small observatory with a sliding roof under a suburban sky (19.40 SQM). Among other things, the observatory is equipped with a 10micron GM2000 HPS II mount and a 12" GSO RC telescope, which he uses at full focal length with a KAI 4022 CCD sensor. We are very pleased about the positive feedback on the new CMOS-optimized Baader 3.5 / 4nm Ultra-Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II) (various versions available) and his field report. Original: My general opinion on performance, supported by the tests carried out and my experience with other high-end products, is fully positive. I believe that they can...
  • Bayfordbury Observatory

    The University of Hertfordshire's Bayfordbury Observatory is located about 30 miles north of central London UK and is a teaching observatory for their students on their astronomy/astrophysics related courses. The observatory also hosts open evenings and group visits. The site consists of seven optical telescopes each housed in their own domes along with 4 radio telescopes and a dedicated solar telescope. Funding allowed the purchase and installation of a larger telescope to replace a smaller computerised instrument on the existing concrete pier. A PlaneWave CDK600 telescope system which comprises a PlaneWave CDK24" OTA and L-600 mount in altaz mode was installed atop a sand-filled 0.6m Baader Heavy Pillar (BHP). The telescope was installed in September 2021. Clear skies in the evening also meant we were...
  • A report on visual use of the Baader H-Beta 5.5nm CMOS filter

    In the summer of 2021 I approached Baader Planetarium to ask whether I could test the new Baader O-III Narrowband-Filters (6.5nm) – CMOS-optimized (various versions available) to explore its visual capabilities for binocular observation of galactic nebulae. To my delight and surprise, Messrs. Baader offered not only to provide on loan the 6.5nm OIII Filter which I had requested, but also a prototype of the Baader H-Beta Narrowband-Filter (5.5nm) – CMOS-optimized (various versions available) now available on the market – and to do so in pairs in both 1.25” and 2” filter cells! I must admit that, initially, I had no particular expectations of the 5.5nm filter. For I, too, had allowed the prevailing myths about H-Beta obervation to cloud my view. These myths include:...
  • Alston Observatory

    The Jeremiah Horrocks Institute (University of Central Lancashire's, Alston Observatory) is located about 7 miles north-east of Preston in the North-West of England. The observatory facility is purpose-built for teaching their astronomy/astrophysics students and is also used for public outreach and it comprises both historical and modern telescopes. Already owning a PlaneWave CDK700 0.7m telescope (their Moses Holden Telescope) – installed in 2015, see more images and information here –, we supplied and installed a PlaneWave L-350 mount on a PlaneWave wedge and Baader 0.6m Heavy Duty Steel Pier for their new 3m dome. The telescope that will be currently used is a 12" SCT but will be replaced by a larger aperture wider field instrument. Read the full story of this telescope/mount installation with...
  • Tsiolkovsky State Museum of Cosmonautics

    In spring 2021 we could finally – due to meanwhile somewhat less strict Corona rules – install a turn-key observatory (consisting of a 6.5 meter AllSky dome as well as the instruments mentioned below) at the Tsiolkovsky State Museum of Cosmonautics in Kaluga, Russia. The museum was opened in 1967 and now offers visitors the opportunity to make real astronomical observations. During the day the sun can be observed and photographed in white light or H-alpha, and during late night shows the moon, planets, bright nebulae, star clusters and the like can also be observed. The observatory assembly was divided into two trips about 1 month apart. First, the dome itself was assembled, which presented some challenges to the dome team, as about 2 meters...
  • Tips for Choosing an Energy Rejection Filter for H-alpha-Observations

    The purpose of an Energy Rejection Filter is to prevent as much solar energy as possible from entering the telescope in the first place and thus avoid excessive heating of the etalon of an H-alpha filter. This is done most effectively by a filter in front of the telescope. At the same time, this prevents the air in the tube from heating up - the telescope remains close to the ambient temperature, and there are no air turbulences inside of the OTA due to temperature differences. If we look at the solar spectrum, it becomes clear that such a filter must primarily block visible light. Ideally, it reflects the solar energy energy instead of absorbing it and and does not heat itself up in the...

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