I don't have the time, dark skies or observing site to warrant using more than a dslr for astro imaging and its substantial cost. The alternative was getting the chip on Canon 750d modified and by a reputable organisation, and it was the best decision in my imaging progress. No problems and the conversion done to very high standards. Despite heavily light polluted skies I can now pick up a Hα signal. The best results require a fair bit of processing, but use a CLS filter or Hα clip filter and it gets a lot easier. Images with 750d, Skywatcher Esprit 80ed f5/400, AVX mount, exposures typically 3-5 minutes iso 1600, greyscale with Hα filter from colour. The downside is the expense, including sending a camera insured to Germany. The conversion was done in about a week.
I can not connect it with ClickLock clamp for 2" SC thread #2956220. The thread pitch is thin a bit. Is this in the spec?
I would like to know which product is suitable as same as a nosepiece of 2" Herschel prism #2956500?
The Baader 2" Nosepiece with 2" filter thread (T-2 Part #: 19) # 2408155 is the one which is also used in the Herschel wedge and should fit to the Clicklock #2956220.
It may be that there is a little bit of the anodized coating too thick inside of one of the threads - please take a look at the thread; if it is blocked somewhere, just take a knife and go along the thread once to clean it.
Answer by: Baader Web Team (Admin) on Aug 14, 2019 4:37:00 PM
In the moment when you install our filters in between your camera, the flattener/reducer, Coma corrector, telescope, it becomes part of this unique optical system. And each optical system is different because many items from different manufacturers are involved. All optical surfaces interact with each other in certain ways. One way is that coatings are reflecting unwanted light away. When there is no other surface that reflects the light back - then its perfect, no halos can occur. This is what we mean with "the filter does not produce halos". He does not produce the halos by its own, inside of the filter. But in the moment when other surfaces are close to the filter, it is possible that light gets reflected back by one of these surface and halos occur.
Because there are so many combinations of camera (windows), flatteners, correctors a.s.o. possible, it may happen in that in some unlucky cases even "halo free" filters are involved in the halo production - but not guilty by themself. We know from customer that the windows in front of the chips of certain camera models are more likely to generate halos than other cameras. And some cheaper flatteners/reducers/correctors are also more often involved in the problem.
You can try to turn around the filter, it may be by chance that the reflection of different wavelength from the other side reduces the halo. Or - if anyway possible - bring more space in between filter and the other surfaces that are reflecting. That makes the halos bigger, less bright, and sometimes they disappear.
BUT: Are halos really terrible? If - for example - you make a photo of Horsehead Nebulae with filters, its impossible to get it without halos because the extremely bright star in the field. This fact and this appearance of the object is widely accepted - and it doesn´t look worse than the spikes of the spider of a Newtonian.
Please also read here: https://www.baader-planetarium.com/en/downloads/dl/file/id/287/product/2958/faq_problems_with_filters_can_have_the_strangest_causes.pdf
Even photos from professional Observatories show halos because its unavoidable. And nobody cares.
If you send us your photo with halo and detailled informations about the setup (camera, reducer, flattener, corrector, filter, telescope) then we can help you to find the source for the halo - but most likely you cannot get rid of it, only with image processing tricks.
Answer by: Baader Web Team (Admin) on Aug 9, 2019 12:33:00 PM
I have a Zeiss Telementor 1 63/840 telescope with the non-rotating helical focuser (wonderfully smooth). The connection on the telescope is the M44 thread. I want to use a prism diagonal with 1.25" eyepiece holder so I can take advantage of my Televue eyepieces. Can you specify all the parts I need to order?
Simply enter "M44" or "Zeiss" in the search mask of the shop and you will find all possible adaptors for this kind of telescoipe . We suggest # 1508041 M44/T-2 adaptor together with a Quickchanger system # 2456321
Answer by: Baader Web Team (Admin) on Aug 8, 2019 8:37:00 AM
I installed the Steeldrive II and the controller on one of my scopes. Works perfectly, thanks! You mention that he focusing motor will be sold separately. Is that already possible? I want to install the second motor on another telescope.
Our company exists now for more than 50 years. In this time, more than 15.000 Baader Planetariums (the first patented product of our company) help all over the world to give students an understanding of astronomical correlations. In our own manufactory, more than 500 observatory domes have been produced and delivered turnkey-ready. Instruments and telescope accessories from "Baader" are known for their high qualities by many astronomers and universities. We consider it our duty and obligation, not only to sell telescopes, but an indivdually selected telescope system, that brings you a lifetime of joy.
Attention, Holidays: in the time from August 19th through 30th, 2019our offices are not fully staffed due to vacation. This may cause slight delays in processing orders and email-requests. We are not available by telephone in these two weeks. Thank you for your understanding.