6 ms·
Quite an impressive build. How hard is it to collimate the telescope? Does it hold the collimation?
by rom16384 3mo ago
Quite an impressive build. How hard is it to collimate the telescope? Does it hold the collimation?
- chantepierre 3mo agoHi ! It is quite easy, with 2 tilt screws at the secondary cage, and the primary cell floats on three heavy duty springs. I can shake it and nothing moves, this is my first criteria. I collimate with a cheshire tool but always finish on a star at medium power (since this telescope realistically does not reach high power, since it would need 2mm eyepieces which are the opposite of wide field views). I use it with Explore Scientific 17mm 92 degree, and a 13mm APM XWA 100 degree eyepieces, and do star collimation with a 6.7mm eyepiece. So most of the use is at 25x, to frame huge objects like NGC7000 or the largest extensions of M31
- helij 3mo agoBarlow!?
- chantepierre 3mo agoWell, I could, but checking collimation at 1-2D magnification for an instrument used at 0.16D provides no observable advantage once star collimation was done. My rule of thumb is to star collimate at a higher power than actually used to observe