Saturn from SCT second attempt :)

[riklaunim]

8" SCT, HEQ5, Baader "amateur" LRGB, Astronomik Pro Planet 742, DMK21 and a lot of small fluffy clouds breaking imaging Much better colimated OTA

f/10 IR-RGB

f/28 RRGB UO 2.8x Klee Barlow

Green and Blue limited due to clouds :|

ToDo:

- get cryford focuser for SCT

- get true parfocal LRGB filters (got Orion filters )

- get 2x Barlow for f/20

- get bahtinow mask

- nuke the clouds

- make HEQ5 do 2/3-star align on tree stars in E-S

[beamish]

Very nice indeed

[Glasspusher]

The f28 images are quite sharp with a fair bit of detail in there. Looking good.

John.

[AztecastroMcJ]

nice pics for 8" SCT, what make is scope?

James

[riklaunim]

nice pics for 8" SCT, what make is scope?

James

What?

The OTA is old "Super C8" made about 1983/82 so I may be younger than the scope The f/28 is overscaled. For 5,6 x 5,6 pixels f/20 is optimal, and dark Saturn isn't a good target for larger scale. The f/28 image shows "second ring" which is related to slight de-collimation and, or slight out of focus. I'm getting Cryford focuser to aid this

[neil phillips]

Getting there. Nice shots.

The double ringing could also be due to the filters having no IR UV BLOCK did you use a IR UV block, if not i suspect that is the cause. if you did then yes most likely collimation ?

[michael.h.f.wilkinson]

Nice shot.