anderswallin.net » autoguiding

Andromeda galaxy (M31)

admin — Mon, 14 Sep 2009 07:59:13 +0000

A stack of four 10 minute exposures at iso400 through a 200 mm F5.6 lens. I really need to get a handle on processing these RAW frames for best results...

Autoguiding now seems to work quite well, here's a comparison between 10 min frames with guiding on/off:

More exposure is better, this one has about 40 min in total, previous attempts had only about 12 min and 8 min.

2009Jan, 12x 60 s
2008Nov, 17x 30 s

Needs Guiding

admin — Mon, 05 Jan 2009 21:19:10 +0000

An 8 minute exposure through a 200mm lens. Unguided EQ-6 mount. With this mount and my polar-alignment skills it seems that a 60s exposure is the maximum achievable at 200mm.

I have a QHY5 guide-camera and a 500/5.6 Rubinar which I plan to use for auto-guiding which will (I hope!) put an end to the squiggly stars.

Rubinar 500/5.6

admin — Wed, 19 Nov 2008 20:37:20 +0000

I've bought a second hand Rubinar 500/5.6 . The plan is to use it for auto-guiding my EQ6 mount using something like the QHY5 camera, but the lens should also be fun to play with for normal telephotography.

Miloslav Druckmuller has a good example of astrophoto-use for this lens, and there are many more examples on flickr.