Trying out temperatures with sundancer

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SolarHans
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Trying out temperatures with sundancer

Post by SolarHans »

Today it was a very sunny day again so I could not resist the temptation to setup my telescope in my lunch-break to try out some things with my Sundancer ii.

A few weeks ago I compared my 102mm F7 with a 102mm F11.
This time a tried out the effects of the temperature with the 102mm F11. (With the sundancer the effective F-ratio is 33.)

I tried the settings in the range : minus 7.9 to plus 3.0
After stacking the best 25% in AS3 the darkest images were at about minus 5 minus 4
CompareTemperatures110mmF33.jpg
CompareTemperatures110mmF33.jpg (129.15 KiB) Viewed 442 times
So this one is on band (?)
Sun7_110F33_min4ImppPS2.tif.jpg
Sun7_110F33_min4ImppPS2.tif.jpg (399.08 KiB) Viewed 442 times
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Hans


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Re: Trying out temperatures with sundancer

Post by MAURITS »

Hans it's always difficult to choose, but I like the images min 6, min 52 and min 4.


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Re: Trying out temperatures with sundancer

Post by Dennis »

Thanks for sharing this Hans, minus5 would be my choice.
If its about uniformity i would not color the image or add the b&w version to it.

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Re: Trying out temperatures with sundancer

Post by SolarHans »

Thanks Maurits and Dennis.

Yes coloring is another thing I have to learn ;)
I added the b/w image.
Sun7_110F33_min4Impp.jpg
Sun7_110F33_min4Impp.jpg (681.57 KiB) Viewed 421 times
regards,
Hans


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Re: Trying out temperatures with sundancer

Post by Montana »

I like min 4 or 5 :hamster: :bow terrific!!

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Re: Trying out temperatures with sundancer

Post by Dennis »

Thats much better now for to see uniformity, thx. I think its a fine filter and this setting looks good to me. But i would try to tweak the last bits of the right edge with min5 setting.

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Re: Trying out temperatures with sundancer

Post by marktownley »

Min 5 looks good to me, but difficult to tell with the thumbnails.

It does look to be producing excellent results.


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Re: Trying out temperatures with sundancer

Post by torsinadoc »

I think -5 and it looks like you have a nice filter to use


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Re: Trying out temperatures with sundancer

Post by minhlead »

Thanks for the review. I was wonfering what the filter was like after reading reviews. Looks like the filter got very good uniformity. I'd pick the min 4 or min 3.


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