August 3, 2020: Calcium Trio

An archive of all the best images Solar Chat has to offer!
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

August 3, 2020: Calcium Trio

Post by p_zetner »

Hi Everyone.

Weather and seeing conditions cooperated nicely for two consecutive days, the 3rd and 4th of August. On the 3rd, I managed a productive session with the spectroheliograph and am slowly processing the images. Here, I'm presenting the full disk in the light of the calcium ion at three wavelengths: the K line (3934 A), the H line (3968 A) and one of the infrared triplet lines (8498 A). This was the first time imaging in the infrared and poor planning led me to image the 8498 A component of the triplet as opposed to the stronger 8542 A line.

To my eye, the full disk view shows no obvious differences among the three lines. It's possible that the infrared triplet lines have something different to offer at higher image resolution but it's unlikely I'll be able to spot any differences with my instrument. I'll have to give the stronger triplet line a go in the future but need a new filter to accomplish this. Some order sorting with an Edmund Optics 850nm 10nm bandpass filter was required for the present image and the 8542 A line was right at the filter cutoff edge.

Hope you enjoy this preliminary output from the August 3rd session.
Cheers.
Peter
Calcium_montage_labels_siz.png
Calcium_montage_labels_siz.png (6.27 MiB) Viewed 471 times


User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 14205
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK
Has thanked: 8415 times
Been thanked: 8161 times

Re: August 3, 2020: Calcium Trio

Post by Carbon60 »

Very nice, Peter. Amazingly similar across the spectrum.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
User avatar
Montana
Librarian
Librarian
Posts: 34560
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 17667 times
Been thanked: 8788 times

Re: August 3, 2020: Calcium Trio

Post by Montana »

Wonderful images Peter, but I can't see much difference between the different calcium lines on the large scale.

:bow :hamster:

Alexandra


User avatar
Valery
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4059
Joined: Sun Nov 18, 2012 3:13 pm
Has thanked: 156 times
Been thanked: 893 times

Re: August 3, 2020: Calcium Trio

Post by Valery »

Hi Peter,

Very impressive results.

Yes, I still hope that with a narrower slit you will be able to detect some filamentary-like structures which makes
8542.1A images as a mixture of Ca and Ha images.

Keep my fingers crossed and wish you a luck. If you will accomplish this chanllenge task then this will be historical event
in amateur solar astrinomy. Go ahead!


Valery


"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
Post Reply