I want to attach my Celestron Neximage 10 to my Canon eos lenses. Canon eos cameras optical distance from the back of lens to the sensor is 44mm. The distance of this adapter is 26mm and the back focus of my Neximage is 13.1 mm. Would I need an extension tube 5 mm long to achieve focus? Thank you, David.
Yes - even if you might be able to reach focus without the 5mm extension, the sensor would be so far away from the distance for which the lens is designed, that the quality would suffer.
So, we highly recommend the extension.
Answer by: Baader Web Team (Admin) on Feb 12, 2020 9:43:00 AM
This depends on the connection to the pillar below. The short pillar itself is made of massive steel, this part itself can easily handle ~100kg of weight, the question is how solidly you are mounting it onto your pillar.
Answer by: Baader Web Team (Admin) on Feb 11, 2020 12:19:00 PM
What has to be the maximum and minimum diameter of an unmounted filter in order to properly fit into the filter cell 2" low profile? Is a 50mm diameter filter going to be suitable to be mounted in your 2" filter cell? Thank you.
Unfortunately a 50 mm filter will not fit into our cells because the connecting male/female (standard) threads measure 48mm as outer diameter - and consequently the female side must be smaller then that in clear diameter, otherwise filter cells could not be combined. Accordingly the largest glass diameter could be 47.5 mm and the smallest possible size would be 46.5 mm, whereas this already will be problematic because the filter substrate will need some camfer (ground bevel) in order to protect the glass from chipping. So in reality the filter should not be smaller than 47 mm.
Answer by: Baader Web Team (Admin) on Feb 17, 2020 11:11:00 AM
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.