to weixing : How is astrophotgraphy with the 8"?

[kochu]

Rotating ring is very handy when handling big newtonians on EQ. mounts.

The simplest way is to clamp one or two wooden embroidery hoops as shown in the site below. It is available in Singapore for about 3.5 S$ each in shops selling stiching materials.


http://crossstitch.about.com/od/basicsu ... inhoop.htm

Kochu/10-5-07

[VinSnr]

Rotating ring is very handy when handling big newtonians on EQ. mounts.

The simplest way is to clamp one or two wooden embroidery hoops as shown in the site below. It is available in Singapore for about 3.5 S$ each in shops selling stiching materials.


http://crossstitch.about.com/od/basicsu ... inhoop.htm

Kochu/10-5-07

You are da man!! Give you a tiger!

[VinSnr]

Hmm a white OTA 8" and f/4 Newtonian is vixen's R200SS

[Meng Lee]

Oh, hehe. I would imagine R200SS with coma corrector could be the cheap and good alternative to Tak Eplison.