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.
Is the Baader Contrast Filter good for moon, planets and nebulae? If so I have a Tele Vue 2” 27mm Panoptic, Tele Vue 1.5” 18mm & 8mm Radians. (My scope if an 8” Meade LS ACF.) What would be the best size filter to get, since I don’t want to buy both, at least not yet?
The Contrast Booster is ideal for observation of moon and planets for Fraunhofer refractors with short focal legth, means big colour abberation when magnification is high. It is not best for nebulae because these get not observed with high magnification so the colour abberation is not visible. The filter is furthermore not necessary for mirror telescopes like ACF because these have no colour abberation. If you want to observe nebulae with an ACF telescope you should choose an UHC-S filter. For planets choose the Neodymium filter or colour filters, especially on Mars colour filters (orange for surface detail, bright blue for clouds) are enhancing contrast massively.
Answer by: Baader Web Team (Admin) on Aug 16, 2018 2:44:00 PM
This usually works - both Celestron and Meade use the same SC-thread. So, the thread should be the same, although we have made the experience that in the past there were some Meade-telescopes where threads were so far away from the tolerandces that it didn't work. But usually the threads should fit.
Depending on the depth of the thread of your star diagonal, it may be that you need an additional spacer, otherwise a coupling ring may rotate, although the threads fit. Unfortunately, we do not have Meade accessories here to try it out.
Answer by: Baader Web Team (Admin) on Aug 6, 2018 8:39:00 AM
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