{"id":199,"date":"2018-10-30T17:06:55","date_gmt":"2018-10-30T15:06:55","guid":{"rendered":"http:\/\/www.hakos-astrofarm.com\/en\/?page_id=199"},"modified":"2025-11-01T07:50:27","modified_gmt":"2025-11-01T05:50:27","slug":"vehrenberg-sternwarte","status":"publish","type":"page","link":"https:\/\/www.hakos-astrofarm.com\/en\/vehrenberg-sternwarte\/","title":{"rendered":"Vehrenberg Observatory"},"content":{"rendered":"\t\t
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Many of the older generation of astronomers will be familiar with the name Dr. Hans Vehrenberg.\u00a0 He was very active in the 1970’s and the author of several books.\u00a0 He was also renowned as the co-editor of ‘Sterne und Weltraum’, a well-known German astronomical magazine.\u00a0 He has a special meaning for Hakos as he introduced amateur astronomy to us.\u00a0 During his visits, back then on Hohenheim, he was an inspiration to Walter Straube<\/a> in the field of astronomy and became partly responsible for the subsequent development of Hakos becoming an Astro Farm.\u00a0 In his honour, we have decided to name the first established observatory on Hakos after him.<\/p>

The Vehrenberg Observatory is located on the 1st floor in the immediate vicinity of the accommodation.\u00a0 It has a 2.5 m x 4 m retractable roof and is accessible via a spiral staircase.\u00a0 Next to it is a 3 m x 4.5 m observation platform with separate access.\u00a0 This platform offers two solid columns of 16 cm in diameter, on which your own\/hired instruments can be mounted.\u00a0 Both the observatory and platform can be provided with an effective windbreak.\u00a0 All-round visibility is slightly limited to the north by the retractable roof.<\/p>

Mount:<\/strong>\u00a0 The observatory houses a vintage professional Zeiss Jena mount, which is practically unlimited in its loading capacity and extremely wind resistant.\u00a0 There are stepping motor drives in both axes and a Boxd\u00f6rfer Powerflex MTS-4 control.\u00a0 Auto-guiders can be connected to the controller.\u00a0 In addition, sensitive manual correction is possible without vibration.\u00a0 The tracking is virtually error-free and allows for a relaxed guiding.\u00a0 Pitch circle use is possible in RA by converting to sidereal time.\u00a0 The mount does not support GoTo functionality, so objects must be found manually.\u00a0 However, tracking control with auto-guider is possible.\u00a0<\/p>

Telescopes:<\/strong>\u00a0 The C11 is a Schmidt-Cassegrain telescope with 28 cm aperture and ~ 2800 mm focal length.\u00a0 In addition, the mount is equipped with a 7″ MEADE ED\/APO (178mm f\/9) refractor, which is very good for planetary observation and can be used as a guide-scope.\u00a0 Astro-photographers can mount their camera with an appropriate adapter (please bring your own T-ring) directly in the focus of the instruments.\u00a0 Ambitious astro-photographers could alternatively also pack their own instruments onto the mount.\u00a0 The existing equipment can then be removed if necessary.\u00a0 Appropriate\u00a0 counterweights are available.\u00a0 The C11 is equipped with a 3″ Losmandy rail and the mount has the appropriate clamping.<\/p>

The counterweight axle offers space for at least 2 cameras.\u00a0 A very stable tiltable bar has two photo screws (1\/4″) for the cameras.\u00a0 Again, the weight of the photo equipment does not matter.<\/p><\/div>

The following accessories are available:<\/p>