well here it is sun omega bob caH

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
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Re: well here it is sun omega bob caH

Post by highfnum » Mon Jan 26, 2015 12:49 pm

"In any case it is better significantly than K-line."

1) Valery why did you say that ?

I guess Montana and myself are not seeing a great difference from Baader K-Line

2) so your guess is that FWHM some where in 4A-6A area with this filter?(caH)

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Re: well here it is sun omega bob caH

Post by Valery » Mon Jan 26, 2015 5:36 pm

highfnum wrote:"In any case it is better significantly than K-line."

1) Valery why did you say that ?

I guess Montana and myself are not seeing a great difference from Baader K-Line

2) so your guess is that FWHM some where in 4A-6A area with this filter?(caH)

1. Bacause I see much finer details in 5A Ca H line than at images with K-line 80A (!!!) filter.
The image made by Walter with 6" refractor and 5A Ca H is FUUUUUULL of fine details never imaged with K-line filter.

2. I guess it is about 4A FWHM. The problems are:

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

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Re: well here it is sun omega bob caH

Post by highfnum » Mon Jan 26, 2015 7:35 pm

Thanks Valery for always answering
sorry to hit you with so many questions
but I value the responses
And its a learning curve

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Re: well here it is sun omega bob caH

Post by Valery » Mon Jan 26, 2015 7:38 pm

highfnum wrote:Thanks Valery for always answering
sorry to hit you with so many questions
but I value the responses
And its a learning curve
Don't worry. You are welcome. I learning here too. Wonderful TOS free solar site!
"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.

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Re: well here it is sun omega bob caH

Post by swisswalter » Mon Jan 26, 2015 8:32 pm

Hi Mark

thank you very much. We have to extend that discussion and it will take time. Another 12 days gone without having had even the chance to capture the disk :( very heavy dark side syndroms, I'm suffering :cry:
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

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Re: well here it is sun omega bob caH

Post by highfnum » Tue Jan 27, 2015 8:10 pm

VALERY Would stacking another caH filter
3of them would make band more narrow
or does law of diminishing return
set in ?

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Re: well here it is sun omega bob caH

Post by Valery » Tue Jan 27, 2015 8:43 pm

highfnum wrote:VALERY Would stacking another caH filter
3of them would make band more narrow
or does law of diminishing return
set in ?
I don't think this is a good idea - to stack three Omega filters. Too expensive! Even two filters are too expensive cause it is
possible to buy CaK PST or Lunt B600 for comparable or even less money and have CaK with narrow enough bandpass.

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.

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Re: well here it is sun omega bob caH

Post by highfnum » Sat Jan 31, 2015 10:26 pm

well
I took a few tips from Valery to heart
1) CAh with extra element filter that bob sent me
2) increased FL now F30 for more parallel beam

BUT seeing conditions were horrible - sun looked like I was at bottom of a pool
high winds - i was forced to use my 60mm unitron which is pushing that little baby

none the less if you look close thru the mess
it looks like I have potential for a good image - surface looks more caked
I feel silly posting such a mush image but that is what I have now
caHf30.jpg
caHf30.jpg (144.12 KiB) Viewed 1858 times

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Re: well here it is sun omega bob caH

Post by swisswalter » Sun Feb 01, 2015 7:43 am

Hi John

bravo you went out despite the horrible seeing conditions. The result however is not convincing me :oops:
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: well here it is sun omega bob caH

Post by highfnum » Sun Feb 01, 2015 2:00 pm

Well until weather breaks
I'm taking a break
it is just to fustrating
my answer is I dont know

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Re: well here it is sun omega bob caH

Post by highfnum » Sun Apr 05, 2015 11:21 pm

I have a question about daystar caH
this is mostly geared towards Walter
but anyone may chime in

why was 5.0A chosen instead of 2.0-3.0A like thier caK??

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Re: well here it is sun omega bob caH

Post by Valery » Mon Apr 06, 2015 4:06 am

highfnum wrote:I have a question about daystar caH
this is mostly geared towards Walter
but anyone may chime in

why was 5.0A chosen instead of 2.0-3.0A like thier caK??
To make it visually usable for those, who can see this light, IMHO.


First thing what you need to improve is the camera.
"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.

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Re: well here it is sun omega bob caH

Post by swisswalter » Mon Apr 06, 2015 6:34 am

highfnum wrote:I have a question about daystar caH
this is mostly geared towards Walter
but anyone may chime in

why was 5.0A chosen instead of 2.0-3.0A like thier caK??
Hi John

as simple as that, it was the only filter available. Soon I will receive Bobs CaH and can double stack ;)
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: well here it is sun omega bob caH

Post by highfnum » Mon Apr 06, 2015 11:50 am

Walter thanks for taking risk on this one

but I wanted to know why Daystar chose that bandwidth

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Re: well here it is sun omega bob caH

Post by Valery » Tue Apr 07, 2015 6:59 am

highfnum wrote:Walter thanks for taking risk on this one

but I wanted to know why Daystar chose that bandwidth
I repeat for you: To make it visually usable for those, who can see this light. Ca K is worser for visual than Ca H.
"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.

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