First Light Cal-K and HA Full disks through cloud

this is the main message area for anything solar :)
Post Reply
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

Yes the title says it all. Supposed to be lovely sunshine again today but that's two days I've had high cloud and intermittent low cloud. Anyway it's a long story so here is the first light through cloud of with the Lunt B1800 Ca-K module plus HA. I had to change scopes and use the 70mm Stellaview which I had not made an aperture mask for because when I came to fit the Lunt Ca-k module in the focuser of the revelation 80ed it wouldn't go all the way in as there is a lip about two inches in. I wasn't sure if it was Ok using the Ca-k module not fully in the focuser tube so hence using the 70mm Stellaview. Would it be OK having the module not fully all the way in? I was afraid that the light path might damage to ERF is there was more concentrated light. Anyway if those with more experience than I could advise that would be great. I also had to battle uneven illumination particularly with the HA has during capture the clouds were whizzing over the disk. Pleased with the potential of the Lunt B1800 Ca-K module though.

I found post processing the Ca-K different than processing HA. It's all a new learning curve.
Attachments
20210331-134443UTellabryant-Ca-k-col.png
20210331-134443UTellabryant-Ca-k-col.png (5.73 MiB) Viewed 210 times
20210331-134443UTellabryant-Ca-k.png
20210331-134443UTellabryant-Ca-k.png (2.57 MiB) Viewed 210 times
20210331-134059UTellabryant-col.png
20210331-134059UTellabryant-col.png (6.57 MiB) Viewed 210 times
20210331-134059UTellabryant.png
20210331-134059UTellabryant.png (2.3 MiB) Viewed 210 times
IMG_20210331_135749.jpg
IMG_20210331_135749.jpg (2 MiB) Viewed 213 times


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
dhkaiser
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1537
Joined: Sat Dec 14, 2019 2:57 pm
Location: Indiana, USA
Has thanked: 902 times
Been thanked: 745 times

Re: First Light Cal-K and HA Full disks through cloud

Post by dhkaiser »

Very nice captures.


Dan
Lunt LS60THa, Lunt LS60FHa DS
Lunt 102mm ED, William Optics ZS73, Herschel Wedge
Celestron C6 SCT
Ioptron AZ Pro mount, CG-4 mount
ASI 178 mono
South central Indiana
USA
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

dhkaiser wrote: Wed Mar 31, 2021 5:21 pm Very nice captures.
Thanks dhkaiser, appreciate the comment.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 8627
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK
Has thanked: 1656 times
Been thanked: 1501 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Carbon60 »

Hi Nigella,

Good images. No need to insert the module all the way in.

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
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

Carbon60 wrote: Wed Mar 31, 2021 8:05 pm Hi Nigella,

Good images. No need to insert the module all the way in.

Stu.
Thanks Stu, appreciate your input. I'll use the 80ed tomorrow then, weather permitting.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2917
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 1653 times

Re: First Light Cal-K and HA Full disks through cloud

Post by EGRAY_OBSERVATORY »

Hi Nigella, have advised your post (over-leaf) which Stu confirms too.

Good on your first light with the BF1800 and although the disk is a little quiet for Calcium-K imaging, hopefully tomorrow you will capture more images and the focus is fine in your image.

I'm sure you already know that processing is a little-different settings for CaK than Ha, where Brightness, Contrast and colouring make much difference to the RAW image, so well worth trying all sorts of level-changes and sharpening, whilst keep the original RAW image safe elsewhere...

Very well done though

Terry


Highbury Mark
Im an EXPERT!
Im an EXPERT!
Posts: 208
Joined: Tue Apr 28, 2020 4:53 pm
Has thanked: 78 times
Been thanked: 117 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Highbury Mark »

Very nice considering the conditions and lack of active regions Nigella. Am sure you’re going to have lots of fun with the new filter.


TeleVue 85 + Solarscope SF70DS
Tak FC-100DC, Quark Chromosphere, Baader wedge
Zeiss binoviewer, Zeiss OPMI/TV plossl eyepieces
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

EGRAY_OBSERVATORY wrote: Wed Mar 31, 2021 10:19 pm Hi Nigella, have advised your post (over-leaf) which Stu confirms too.

Good on your first light with the BF1800 and although the disk is a little quiet for Calcium-K imaging, hopefully tomorrow you will capture more images and the focus is fine in your image.

I'm sure you already know that processing is a little-different settings for CaK than Ha, where Brightness, Contrast and colouring make much difference to the RAW image, so well worth trying all sorts of level-changes and sharpening, whilst keep the original RAW image safe elsewhere...

Very well done though

Terry
Thanks Terry, appreciate your input as well. Just another learning curve, lol.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

Highbury Mark wrote: Wed Mar 31, 2021 11:08 pm Very nice considering the conditions and lack of active regions Nigella. Am sure you’re going to have lots of fun with the new filter.
I'm sure I will, thanks Mark.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
MAURITS
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2122
Joined: Tue Nov 27, 2018 4:37 pm
Location: Belgium
Has thanked: 149 times
Been thanked: 338 times
Contact:

Re: First Light Cal-K and HA Full disks through cloud

Post by MAURITS »

Nice and clean images Nigella.


Regards,
Maurits

Vista del Cielo Observatory

www.vistadelcielo.be
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

MAURITS wrote: Thu Apr 01, 2021 5:49 am Nice and clean images Nigella.
Thanks Maurits, much appreciated.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
Montana
Librarian
Librarian
Posts: 24949
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 3734 times
Been thanked: 1492 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Montana »

:hamster: I am very happy for you, I remember viewing CaK for the first time and it was like meeting a new solar system object for the first ever time, I loved it! Don't worry where you place the wedge, in my scopes I tend to bring it in and out as a fast way of focus between white light wedge and CaK wedge so it goes in as far as it comes into focus where the WL was :) it never occurred to me to think of focus point of the telescope on the ERF. Oh well, it is still alive anyway :)

CaK imaging is very different, you don't have etalon issues to worry about and that is a dream but it is very easy to over expose and many fall down this route. It is surprising how dark an exposure you have to get so as not to blow out the white faculae and super granulation. In your capture software zoom in to a region of faculae and keep bringing the exposure right down until you see the individual speckles. The surrounding mottles will be suprisingly dark but don't worry. In post processing you can bring these back up, but if you over expose the white you will have lost the data. Also keep your gamma fairly neutral, when large spots occur it is very easy to get an ugly black umbra if you have gamma even a tiny bit low in CaK.

I hope this helps and thanks for making the Sun vanish :)

Alexandra


User avatar
JochenM
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2190
Joined: Tue Dec 10, 2019 2:26 pm
Location: Belgium
Has thanked: 481 times
Been thanked: 803 times

Re: First Light Cal-K and HA Full disks through cloud

Post by JochenM »

Nice first results, Nigella!

As far as the capturing and processing of CaK vs HA goes; there's a fair bit of difference indeed. I basically do the same thing Alexandra outlined above (keep the histogram at 60-70% or so as to not blow out the highlights; finetune in post as needed).


User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

Montana wrote: Thu Apr 01, 2021 9:24 am :hamster: I am very happy for you, I remember viewing CaK for the first time and it was like meeting a new solar system object for the first ever time, I loved it! Don't worry where you place the wedge, in my scopes I tend to bring it in and out as a fast way of focus between white light wedge and CaK wedge so it goes in as far as it comes into focus where the WL was :) it never occurred to me to think of focus point of the telescope on the ERF. Oh well, it is still alive anyway :)

CaK imaging is very different, you don't have etalon issues to worry about and that is a dream but it is very easy to over expose and many fall down this route. It is surprising how dark an exposure you have to get so as not to blow out the white faculae and super granulation. In your capture software zoom in to a region of faculae and keep bringing the exposure right down until you see the individual speckles. The surrounding mottles will be suprisingly dark but don't worry. In post processing you can bring these back up, but if you over expose the white you will have lost the data. Also keep your gamma fairly neutral, when large spots occur it is very easy to get an ugly black umbra if you have gamma even a tiny bit low in CaK.

I hope this helps and thanks for making the Sun vanish :)

Alexandra
Thanks Alexandra, appreciate your help. Yeah, very sorry I got the new kit and now it'll be cloudy, rain, snow, etc, etc for weeks, lol.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

JochenM wrote: Thu Apr 01, 2021 9:46 am Nice first results, Nigella!

As far as the capturing and processing of CaK vs HA goes; there's a fair bit of difference indeed. I basically do the same thing Alexandra outlined above (keep the histogram at 60-70% or so as to not blow out the highlights; finetune in post as needed).
Thanks Jochen, really appreciate the guidance.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
marktownley
Librarian
Librarian
Posts: 30736
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 4057 times
Been thanked: 1780 times
Contact:

Re: First Light Cal-K and HA Full disks through cloud

Post by marktownley »

Great images Nigella! Sage advice from Alexandra and Jochen, trick is not to over process.


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!
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

marktownley wrote: Fri Apr 02, 2021 10:25 am Great images Nigella! Sage advice from Alexandra and Jochen, trick is not to over process.
Thanks Mark. Yeah, good advice. Imaged today and tried Firecapture for the first time. Really liked it. Thing is, I didn't think it would be literally Firecapture. I made a rockie mistake of not caping one of the scope's while adjusting the pressure tuner. I couldn't understand why I could smell burning and continued, next thing, where is this smoke coming from. Omg, me, lol. Lucky I had a shirt on underneath and didn't reach my arm. Solar imaging is dangerous.
Attachments
IMG_20210402_123954.jpg
IMG_20210402_123954.jpg (4.49 MiB) Viewed 105 times


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2917
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 1653 times

Re: First Light Cal-K and HA Full disks through cloud

Post by EGRAY_OBSERVATORY »

Oh dear Nigella.
I certainly won't "rub-in" the snag of today that you've had and you were lucky - somewhat...
But wish you well and better safe than sorry...

Terry


User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

EGRAY_OBSERVATORY wrote: Fri Apr 02, 2021 9:38 pm Oh dear Nigella.
I certainly won't "rub-in" the snag of today that you've had and you were lucky - somewhat...
But wish you well and better safe than sorry...

Terry
Thanks Terry, lesson learned.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4625
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.
Has thanked: 2654 times
Been thanked: 2347 times

Re: First Light Cal-K and HA Full disks through cloud

Post by DeepSolar64 »

I have heard of people burning themselves with older solar wedges too! Ouch!!


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
ZWO ASI178MM monochrome camera
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

DeepSolar64 wrote: Sat Apr 03, 2021 2:39 am I have heard of people burning themselves with older solar wedges too! Ouch!!
Yeah, least it shows people it's dangerous to look through a telescope without proper filters, can you imagine what would happen to your eyeballs. Doesn't even bear thinking about.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4625
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.
Has thanked: 2654 times
Been thanked: 2347 times

Re: First Light Cal-K and HA Full disks through cloud

Post by DeepSolar64 »

Stardust5858 wrote: Sat Apr 03, 2021 8:13 am
DeepSolar64 wrote: Sat Apr 03, 2021 2:39 am I have heard of people burning themselves with older solar wedges too! Ouch!!
Yeah, least it shows people it's dangerous to look through a telescope without proper filters, can you imagine what would happen to your eyeballs. Doesn't even bear thinking about.


It actually wasn't from the eye end but the open end or clear glass covered back where 96 percent of the suns light/heat passes through the wedge. It would burn skin, clothes etc. Modern wedges use a translucent/opaque ceramic disc and/or vents to dissipate the heat.

James


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
ZWO ASI178MM monochrome camera
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
MapleRidge
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 7442
Joined: Fri Jan 13, 2012 11:58 pm
Location: Cambray, ON Canada
Has thanked: 10 times
Been thanked: 793 times
Contact:

Re: First Light Cal-K and HA Full disks through cloud

Post by MapleRidge »

Great first CaK light Nigella!!!

Each wavelength has its own capture and processing workflows, but you should be onto it in no time ;)

Brian


Brian Colville

Maple Ridge Observatory
Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C9.25 Edge + Stellarvue 110, f7 or C14
Deep Sky Work - Canon 60D (Ha mod), SBIG STF8300/FW8, ONAG
Planetary Work - SBIG CFW10, ASI290MM/ASI462+ADC

8' Diameter Dome
MI250 Mount carrying:
iStar 150mm, f8 OTA Modular Setup
Ha configuration: 2xDSII/B1800Ha/Daystar ERF as modded Ha Scope
WL & CaK configuration: Lunt WL Wedge or Modded B1800CaK Wedge
Lunt LS80PT/LS75FHa/B1200Ha
Daystar Quantum 0.45A SE, Quark Combo Chromosphere,
ASI1600MM, ASI174MM, ASI290MM, PGR Grasshopper Express
User avatar
Stardust5858
Almost There...
Almost There...
Posts: 701
Joined: Tue Oct 29, 2019 11:44 am
Has thanked: 307 times
Been thanked: 365 times

Re: First Light Cal-K and HA Full disks through cloud

Post by Stardust5858 »

MapleRidge wrote: Sun Apr 04, 2021 3:50 am Great first CaK light Nigella!!!

Each wavelength has its own capture and processing workflows, but you should be onto it in no time ;)

Brian
Thanks Brian, yeah, it's just different. Getting to grips with it. Least it's now been sunny these past three days. Lot's of captures so just need to process them all. Something to do after the Easter hols, lol.


10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.

2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Nec6 Eq Mount.
Post Reply