Wednesday, October 21, 2015

Testing of the Canon FD 300mm f2.8

This is not a good test, but this is what I could do at the moment.  Dark sky should be where it shines.

The target object is the moon, and I've used a tele vue 5x before a star diagonal to push the power up...

I found that if I keep on indoor light on, the image will be totally washed out.  It seems like the lack of baffling is the killer of the contrast.  But for deep sky imaging at darker sky, it should be no problem?

Wednesday, October 14, 2015

20151014 Sun

My daughter was sick leave at home, so I was there with her.  Chance to pull out my solar gear and captured this one:

Color cam is not really for H-alpha imaging... again resolution killed by the bayer filter matrix of the ASI 130mc, got to buy a new monochromatic camera soon!  Seems CMOS sensor with rolling shutter is to be avoided?

AVI converted to older format via virtualdub and then processed with Registax 5, downsized to reduce the effect of the artifacts.

Friday, October 02, 2015

20150929 Sun (very poor sky)

Just stacked, and a waste of time to further process.

1524 and 1525 (GMT+8), prime focus.  ASI 120MC.