Sun in Three Wavelengths

[Derek Klepp]

Thought the Solar viewers may be interested in this AR 1254
Ha with 60mm Daystar.
Cak with Baader Cak Filter 100mm Refractor with 3.8ND Baader Solar film+2x Barlow
White Light with Baader 1.8ND Filter 100mm Refractor 3.8ND Film+2x Barlow
All taken with GSTAR EX camera stacked in Registax5 Adjusted in Picasa.

[mswhin63]

Nice images Derek :thumbsup:
What is the focal length of the scope you used to achieve this? I want to buy and ERF and filter but the I have an F5 which may not work.

[Derek Klepp]

The Ha scope is F23 the 100mm is F7 for the White light Shots.As for ERFs and rear mounted filters you generally have to get your scope to F20+.I'm actually considering a front mounted filter and a rear blocking filter such as those made by Lunt and Coronado which are more compatable with the lower F ratios.There are others here who use various setups and would have more experience than me and could also help you in your descision good luck.

[mswhin63]

Cheers, I have tried to use my 3 x Barlow on my F5 but couldn't get enough Focus travel. Still trying to deal with it.

[Terry B]

nice images.
:atom: