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 (Malcolm)]

Nice images Derek
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]

Originally Posted by mswhin63

Nice images Derek
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.

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 (Malcolm)]

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.