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Solar Discs & Features | HA, CaK, Gband | Feb 23rd 2020

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#1 MalVeauX

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Posted 23 February 2020 - 02:37 PM

Heya,

 

Woke up to a blue sky so figured I'd see what our sleepy start was doing. Not much going on. A filament, a prominence, nothing grand. So I did some full discs in HA, CaK & Gband to show the upper & lower chromosphere and photosphere. Seeing allowed a brief look at the chromosphere at a finer scale before the clouds rolled in.

 

Colored:

 

49575351681_4ecb232c6e_b.jpg

 

49574848868_8e160f722a_b.jpg

 

49575355136_5af29813e6_b.jpg

 

49574847788_73d2be9edc_b.jpg

 

B&W:

49575581707_88c5e256be_b.jpg

 

49574849223_953e2b25fd_b.jpg

 

49575355411_58634c767e_b.jpg

 

49575583747_50eb27749d_b.jpg

 

Seeing Data (poor!):

 

SeeingConditions_02232020.jpg

 

Equipment:

 

120mm F10 Masked Frac (CR150HD)
ED80 Frac
Solarmax 60 II Etalon (HA)
Lunt B1200 CaK (CaK)
Edmund Optics 430nm + Baader 10 stop ND filter in 2" Skybender with 2" Baader Blue CCD-IR Block Filter (Gband)
ASI183MM for full discs
ASI290MM for partials

 

Solarsetup_02232020.jpg

 

Very best,


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#2 rigel123

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Posted 23 February 2020 - 02:46 PM

Great Shots!


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#3 TerryWood

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Posted 23 February 2020 - 04:28 PM

Really nice images! There was some interesting areas on the surface today, which I seemed to be able to to view easier with my eyeball using various tunings. Marty, does the Lunt CAK filter simply plug in place of the scopes diagonal without the additional need of a front mounted etalon or ERF? I haven't delved into that world, but it would be interesting if I could simply put it in my Coronado scope (pre-Meade version) and unscrew the front mounted etalons. V/R Terry
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#4 MalVeauX

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Posted 23 February 2020 - 05:11 PM

Really nice images! There was some interesting areas on the surface today, which I seemed to be able to to view easier with my eyeball using various tunings. Marty, does the Lunt CAK filter simply plug in place of the scopes diagonal without the additional need of a front mounted etalon or ERF? I haven't delved into that world, but it would be interesting if I could simply put it in my Coronado scope (pre-Meade version) and unscrew the front mounted etalons. V/R Terry

Hey Terry,

 

Yessir, the Lunt CaK module has its own ERF system before its filters, up to a general rule of thumb of 100mm aperture (per Lunt). So for smaller scopes, its just a diagonal and filter that plugs in. Nothing else needed. Plop in the camera. For my larger apertures (120mm to 150mm), I do put a Baader 2" Blue CCD-IR block filter in front of it, to serve as a D-ERF that removes all the visible spectrum except blue and near UV, greatly reducing thermal load so prolong the filter's life. For my small ED80, I do not bother, the Lunt CaK filter again handles the heat up to 100mm aperture without anything extra.

 

Here's my ED80 with the Solarmax 60 II etalon & blocking filter,  Lunt CaK module in the back and the Skybender with the Edmund Optics 430nm filter. Plug and play to jump between different narrowband options. My ED80 has become a tri-band modular system (hence the 3 disc imaging approach). And the IMX183 sensor let's me do full disc shots with room to spare at that image scale with the 600mm focal length nicely.

 

ED80_HA_CaK_Gband_02232020.jpg

 

Very best,


Edited by MalVeauX, 23 February 2020 - 05:31 PM.

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#5 highfnum

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Posted 23 February 2020 - 06:08 PM

wow lots of detail


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#6 PhotonJohn

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Posted 23 February 2020 - 08:19 PM

Absolutely Splendiferous Marty, you are truly the MAN ! As usual, thanks for the wealth of information in your posts.


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#7 sunnyday

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Posted 23 February 2020 - 08:35 PM

I am sure you have been asked to do this 100 times, but what is the net advantage of having reflective paper on your telescope?
sorry if i'm 101.
btw nice pics like always.


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#8 MalVeauX

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Posted 23 February 2020 - 08:51 PM

what is the net advantage of having reflective paper on your telescope?
sorry if i'm 101.
 

I use reflectix material to act as heat barriers for local seeing conditions, to prevent heat from pluming from the pier, mount, yet.

 

Very best,


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#9 twjs

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Posted 24 February 2020 - 07:55 PM

Hey Marty if we buy you a plane ticket would you do a workshop at NEAF this year?grin.gif 


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#10 MalVeauX

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Posted 24 February 2020 - 09:02 PM

Hey Marty if we buy you a plane ticket would you do a workshop at NEAF this year?grin.gif

I've never been to an organized even for this stuff actually; would be nice to do that sometime and bump elbows.

 

Very best,



#11 Tyson M

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Posted 24 February 2020 - 09:44 PM

bow.gif  Well caught and processed. 


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#12 TerryWood

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Posted 25 February 2020 - 10:40 AM

Thanks for the detailed CaK information! Exactly what I needed to know. I appreciate it! V/R Terry
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#13 hopskipson

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Posted 26 February 2020 - 06:57 AM

"Here's my ED80 with the Solarmax 60 II etalon & blocking filter,"

 

Hi Marty,

Is that the double stack etalon or the primary "Rich View tuned" one?  Nice images as always!


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#14 mikerepp

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Posted 26 February 2020 - 09:41 AM

Awesome stuff Marty!  Great images!


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