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I've just bought my first telescope, a 10 inch Dobsonian, Saxon brand (same as Skywatcher).
In daylight I've collimated it with a laser collimator. Also in delight I've centred the finderscope on a house on the horizon (probably 5 km away). The image is inverted and the left side appears on the right. I understand that's normal.
The house is also centred in the eyepiece and the view is inverted and left appears right, as with the finder scope. BUT the horizon is at about a 60 degree angle ( see pdf sketch attached). Is this normal? Or am I doing something wrong? Or is there a problem with the telescope?
Many thanks in advance
I have decided to sell 'Big Blue' my 22" computerised dobsonian telescope. I would like somebody to get the benefit from the scope, otherwise it will be sitting in storage indefinitely.
Many people on the forum will know this scope well.
This is a big telescope, built by Arthur Edwards, 22" mirror, F4.8. It comes with GOTO Servocat / Argo Navis. I have added locking castors to the base so it can be wheeled on a flat surface, I use long strips of plywood to move it easily.
It has a shroud, mirror box, moonlite focuser, telrad, battery, bag for the poles, step ladders included.
Will not split any of the parts. I will get some images up next week. Telescope is at Loch Rannoch, Perthshire, Scotland.
I have Skywatcher DOB 250 Flexitube GOTO and recently noticed HD webcam in my friend's place...
(AUSDOM AW615 1080P Full HD 12.0M USB2.0)
So I received it for few of beers and managed to place it into 1.25' EP holder without any struggle.
I haven't removed any filters from webcam, just wanted to see if it will fit in and it did, so I was really happy, but...
(unfortunately word "but" always comes after word "happy"),
but... the only thing I can see on the screen is my Primary and Secondary mirrors
I think, this webcam would be perfect for collimation however, what to do next?
I want to see something more than just mirrors, - Moon and Jupiter maybe...
I tried to attach 2'' adaptor which comes by default with the telescope to increase the distance between mirrors and webcam... the result is the same.
I also used flexitube ability to shorten the tube and reduce Focal length, - no result, just the size of the image is different.
Should I try Barlow?