caK and caH with 300mm imaging lens

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highfnum
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caK and caH with 300mm imaging lens

Post by highfnum » Sat Oct 10, 2015 6:53 pm

I swap out my 180mm fl with 300mm fl as Merlin66 suggested and noticed a few things
1) more uniform surface
2) easier to focus
3) proms show better

on the down side - image is larger and centering is tight
caK
2015-10-10cak.JPG
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highfnum
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Re: caK and caH with 300mm imaging lens

Post by highfnum » Sat Oct 10, 2015 6:54 pm

caH
2015-10-10cah.JPG
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Re: caK and caH with 300mm imaging lens

Post by highfnum » Sat Oct 10, 2015 8:07 pm

rig with 300mm tube
shg300mm.jpg
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Merlin66
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Re: caK and caH with 300mm imaging lens

Post by Merlin66 » Sat Oct 10, 2015 9:55 pm

JJ,
Looking good....
The CaK/CaH proms at 5 O'clock show well.
Well done!
Onwards and upwards.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
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"Imaging Sunlight - using a digital spectroheliograph" - Springer

Derek Klepp
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Re: caK and caH with 300mm imaging lens

Post by Derek Klepp » Sun Oct 11, 2015 7:26 am

Keep at it

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DSobserver
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Re: caK and caH with 300mm imaging lens

Post by DSobserver » Sun Oct 11, 2015 10:10 am

clear improvement!

do you mean that you get this better results only increasing the white tube?

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Re: caK and caH with 300mm imaging lens

Post by highfnum » Sun Oct 11, 2015 10:28 am

yes it is only hardware change

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marktownley
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Re: caK and caH with 300mm imaging lens

Post by marktownley » Sun Oct 11, 2015 11:18 am

Very good!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Montana
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Re: caK and caH with 300mm imaging lens

Post by Montana » Mon Oct 12, 2015 6:32 pm

Wow!! that's a huge leap forward, stunning images :bow :bow :bow

Alexandra

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Re: caK and caH with 300mm imaging lens

Post by highfnum » Mon Oct 12, 2015 9:28 pm

thx
this has been a fun project
just a few tweaks here and there make a difference

now at some point I have to learn clean up software steps as created by Wah

I do plan to add iris to control f num of collminator

Montana , Mark you should try this

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