Some H alpha features from April 10.

this is the main message area for anything solar :)
Post Reply
User avatar
p_zetner
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1644
Joined: Sun Mar 18, 2012 4:59 pm
Location: Winnipeg, Manitoba, Canada
Has thanked: 166 times
Been thanked: 719 times

Some H alpha features from April 10.

Post by p_zetner »

Hi Everyone.

Here are the results of some H alpha imaging on April 10. My main motivation was to test the Astrospherics (N. America) app for the second time and confirm its seeing predictions. On the 10th, the seeing was predicted to be "excellent" starting at 10:00am (which is usually a bit late in the morning for good seeing in my experience). It turned out to be pretty good but variable and had probably already deteriorated by 10:00 when I began capturing videos. Local seeing conditions probably play a big part but the app itself seems to be a useful guide at least in predicting particular days when the seeing might cooperate.

Images were taken with the C8 Edge, Aries ERF, ~4.6x telecentric, Daystar 0.6A QPE, ~0.65x FR and Pt.Grey Grasshopper IMX174. The NSO GONG image shows the areas imaged; two proms and a small AR. Prom images were taken without the FR and with the camera operating in mode 1 to use binning for increased brightness...significant loss in resolution though. As you can tell by the GONG image, the NE limb prom was significantly dimmer than the SW limb prom. The two AR images are at slightly different image scales (I can vary the FR strength by changing a spacer) and taken about an hour apart.

Thanks for looking.
Cheers.
Peter.
20210410194130Ch.jpg
20210410194130Ch.jpg (796.59 KiB) Viewed 115 times
101406-0000_pipp_shrp-crvs_siz.png
101406-0000_pipp_shrp-crvs_siz.png (77.45 KiB) Viewed 62 times
102917-0000_shrp-crvs_proc_siz.png
102917-0000_shrp-crvs_proc_siz.png (51.59 KiB) Viewed 62 times
104647-0000_pipp_5x5ARL200-shrp-crvs.png
104647-0000_pipp_5x5ARL200-shrp-crvs.png (1.25 MiB) Viewed 115 times
113040-0000_pipp_shrp-crvs.png
113040-0000_pipp_shrp-crvs.png (1.24 MiB) Viewed 115 times
Last edited by p_zetner on Tue Apr 13, 2021 2:32 am, edited 2 times in total.


User avatar
ffellah
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 11168
Joined: Mon Oct 27, 2014 6:46 pm
Location: Westport, CT USA
Has thanked: 9143 times
Been thanked: 6024 times

Re: Some H alpha features from April 10.

Post by ffellah »

Very nice Peter. I use the app to have an idea of the general seeing too: I find it useful.

Franco


User avatar
marktownley
Librarian
Librarian
Posts: 42269
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20424 times
Been thanked: 10242 times
Contact:

Re: Some H alpha features from April 10.

Post by marktownley »

Nice looking images Peter. I've being checking out Meteoblue for seeing, and find its accuracy - a bit like the seeing, well, variable!


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!
Post Reply