Sun in CaK Lunt B600 + Omega filter

this is the main message area for anything solar :)
Post Reply
User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5489
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK

Sun in CaK Lunt B600 + Omega filter

Post by Carbon60 » Sun Oct 28, 2018 1:22 pm

Inspired by others on this forum, I purchased an Omega CaK filter on ebay to use in conjunction with my Lunt B600. I know that this can be a bit of a risk as they are a somewhat variable in terms of quality and performance, but I thought it worth the risk.

Here are some images from yesterday and this morning. As we know, it's a pretty blank Sun, unfortunately.

Basler acA1920-155um camera
72mm f6 refractor
1.5x barlow FDs and 5x powermate for the closer views.
Omega filter mounted in a filter housing and screwed into the front of the barlow/Powermate.
Minimal ImPPG

Image20181028_CaK_FD_Mono_Omega_LuntB600 by Stuart Green, on Flickr

Image20181028_CaK_FD_Colour_Omega_LuntB600 by Stuart Green, on Flickr

Image20181027_CaK_LuntB600_Omega_Mono_x5 by Stuart Green, on Flickr

Image20181027_CaK_LuntB600_Omega_Colour_x5_clone by Stuart Green, on Flickr

I tried to do a side-by-side comparison, but the clouds had other ideas..... Here is a previous FD using the Lunt B600 alone.

Image20181020-CaK_FD_Mono by Stuart Green, on Flickr

There is a definite improvement over the Lunt module alone.

Last night was clear so I also spent a little time imaging the Moon.

Image20181028_Moon by Stuart Green, on Flickr

Thanks for looking.

A couple of additions (2.5x Powermate 2 pane mosaics).

Image20181028_CaK_FD_Omega_LuntB600 by Stuart Green, on Flickr

Image20181028_CaK_FD2_Colour_Omega_LuntB600 by Stuart Green, on Flickr

Stu.
Last edited by Carbon60 on Sun Oct 28, 2018 5:07 pm, edited 1 time in total.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

User avatar
krakatoa1883
Im an EXPERT!
Im an EXPERT!
Posts: 344
Joined: Sat Jun 11, 2016 9:41 am
Location: Mediolanum

Re: Sun in CaK Lunt B600 + Omega filter

Post by krakatoa1883 » Sun Oct 28, 2018 2:01 pm

Really fine images, Stu. Have you noted any difference compared with B600 alone ?
Raf
My solar images and reports with articles on solar equipment
My personal page on Google+

User avatar
MapleRidge
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5157
Joined: Fri Jan 13, 2012 11:58 pm
Location: Cambray, ON Canada

Re: Sun in CaK Lunt B600 + Omega filter

Post by MapleRidge » Sun Oct 28, 2018 5:18 pm

Hi Stu...

I hope you get more opportunity to compare the combinations!

Out of curiosity, is the Omega+Barlow installed before or after the B600 CaK module?

Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

User avatar
eroel
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4148
Joined: Mon Dec 19, 2011 10:45 pm
Location: México D.F.

Re: Sun in CaK Lunt B600 + Omega filter

Post by eroel » Sun Oct 28, 2018 6:50 pm

Stu:
Beautiful clean and Sharp CaK images.
As for the Moon, very nice.
Best regards,
Eric.

User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5489
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK

Re: Sun in CaK Lunt B600 + Omega filter

Post by Carbon60 » Mon Oct 29, 2018 6:55 am

krakatoa1883 wrote:
Sun Oct 28, 2018 2:01 pm
Really fine images, Stu. Have you noted any difference compared with B600 alone ?
Definitely an improvement with the Omega :)

Stu
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5489
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK

Re: Sun in CaK Lunt B600 + Omega filter

Post by Carbon60 » Mon Oct 29, 2018 7:00 am

MapleRidge wrote:
Sun Oct 28, 2018 5:18 pm
Hi Stu...

I hope you get more opportunity to compare the combinations!

Out of curiosity, is the Omega+Barlow installed before or after the B600 CaK module?

Brian
Hi Brian,

B600 first, directly in the focuser, then the Omega which I mounted in a holder and screwed into the front of the Barlow.

Stu
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5489
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK

Re: Sun in CaK Lunt B600 + Omega filter

Post by Carbon60 » Mon Oct 29, 2018 7:02 am

eroel wrote:
Sun Oct 28, 2018 6:50 pm
Stu:
Beautiful clean and Sharp CaK images.
As for the Moon, very nice.
Best regards,
Eric.
Many thanks, Eric. Maybe at some point I'll image some proms too :)

Stu
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5489
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK

Re: Sun in CaK Lunt B600 + Omega filter

Post by Carbon60 » Mon Oct 29, 2018 7:04 am

TheSkyBurner wrote:
Sun Oct 28, 2018 9:31 pm
looks like you won the lottery with that omega filter.
Hi Apollo, yes, I might have hit lucky with this one, although it isn't 'extremely 2A' as advertised, but it seems to work.

Stu
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

User avatar
marktownley
Librarian
Librarian
Posts: 24527
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Contact:

Re: Sun in CaK Lunt B600 + Omega filter

Post by marktownley » Mon Oct 29, 2018 9:35 am

Looks a positive improvement with the Omega there Stu. Good results.
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
Montana
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 19791
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK

Re: Sun in CaK Lunt B600 + Omega filter

Post by Montana » Mon Oct 29, 2018 10:53 am

I am sure I see a couple of Apollo ferrets in the top two images. Looks nice Stuart, I wonder what it would be like at high res. How much light does the filter cut out? just thinking of exposure length for hi res.

Alexandra

User avatar
ffellah
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2188
Joined: Mon Oct 27, 2014 6:46 pm
Location: Westport, CT USA

Re: Sun in CaK Lunt B600 + Omega filter

Post by ffellah » Mon Oct 29, 2018 11:24 am

Very nice results, Stu

Franco

User avatar
MapleRidge
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5157
Joined: Fri Jan 13, 2012 11:58 pm
Location: Cambray, ON Canada

Re: Sun in CaK Lunt B600 + Omega filter

Post by MapleRidge » Mon Oct 29, 2018 10:42 pm

Thanks for the filter sequence info!!!

Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

User avatar
p_zetner
Almost There...
Almost There...
Posts: 900
Joined: Sun Mar 18, 2012 4:59 pm
Location: Winnipeg, Manitoba, Canada

Re: Sun in CaK Lunt B600 + Omega filter

Post by p_zetner » Tue Oct 30, 2018 2:18 am

Very nice, Stu.
I agree with you. The Omega filter gives some contrast improvement in my system as well. Maybe it does a slightly better job than the Lunt blocking filter in suppressing neighbouring etalon modes. Looks like your filter uniformity is good.
Cheers.
Peter

Post Reply

Who is online

Users browsing this forum: FMEnage, krakatoa1883, Montana and 3 guests