First worthwhile results from a high res set up

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gabrieli
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First worthwhile results from a high res set up

Post by gabrieli »

This is the latest start to solar imaging in my memory due to lack of solar features and poor seeing.
The sky had variable patches of haze with some areas of interest on the sun.

It was a good day to test an f/30 system using a just acquired TZ3 Baader telecentric carrying a Quark Combo chromosphere on the back end of a c9.25 with an Aries 265 mm ERF up front.
TZ3.jpg
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The threads on this telecentric allow it to be attached to the accessory threads on the back of the c9.25. However, the c9.25 accessory threads are too long to fit completely into the body of the telecentric. Nonetheless, it is a secure connection. I would prefer a T2/2" nosepiece attachment on the telecentric to allow it to slip in to the 2" visual back that I usually have on the back of c9.25.

The efl was 6900 mm, somewhat higher than the conditions could support but the image contrast was higher than I remember when I first used a Powermate 2.5X on the same scope last year.

Lou

PS

I went rummaging through some extension tubes for their nosepieces and eyepiece holders and found a nose piece and T2 eyepiece holder that fit the TZ3, all for a more secure setup.
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c9.25 at 6900mm
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7w.jpg
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LS152 at 3800 mm
10w.jpg
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LS80 at 1120mm (forgot about rotating the ghost out)
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fdc.jpg
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Last edited by gabrieli on Sat May 19, 2018 2:22 pm, edited 2 times in total.


Bruce Girrell

Re: First worthwhile results from a high res set up

Post by Bruce Girrell »

Very nice prom detail


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Re: First worthwhile results from a high res set up

Post by rsfoto »

Great images. Nice resolution in the prominences.


regards Rainer

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Re: First worthwhile results from a high res set up

Post by ffellah »

Nice first results, Lou. I know how you feel about horrible weather conditions.

Franco


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Re: First worthwhile results from a high res set up

Post by Valery »

Hi Lou,

Good results for the start.

BTW I would suggest to use a focal reducer (with different spaces) to make image scale smaller. Different F/D for different seeing conditions and objects. This also give you shorter exposures and faster fpl =better fight against the seeing, more stacked images, higher S/N = better resolution, nicer images.

The scale you do use now is noticeably larger than I do use with larger C11 telescope.


Valery
Last edited by Valery on Sun May 20, 2018 1:29 am, edited 1 time in total.


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Re: First worthwhile results from a high res set up

Post by Valtori »

Hi Lou,

Interesting shots from High Res setup!

Val


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Re: First worthwhile results from a high res set up

Post by allhoest »

Nice.

I'm happy to see that there are still some reasonably good prom for fine imaging.

CS
Alex


Bruce Girrell

Re: First worthwhile results from a high res set up

Post by Bruce Girrell »

What function does the telecentric lens serve?


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Re: First worthwhile results from a high res set up

Post by marktownley »

That first closeup came out very well Lou!


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Re: First worthwhile results from a high res set up

Post by FlankerOneTwo »

Bruce Girrell wrote: Sun May 20, 2018 9:53 pm What function does the telecentric lens serve?
The Quark wants a roughly f/30 light cone.


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Re: First worthwhile results from a high res set up

Post by Montana »

Wow!!!! what beautiful detail in the proms :hamster: :bow nice to see you getting some super results :bow

Alexandra


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Re: First worthwhile results from a high res set up

Post by Derek Klepp »

Thanks Lou I think my Solar scopes have gone into hibernation in their cupboard.


Bruce Girrell

Re: First worthwhile results from a high res set up

Post by Bruce Girrell »

FlankerOneTwo - Thank you!


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Re: First worthwhile results from a high res set up

Post by Carbon60 »

Nice images, Lou.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
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Re: First worthwhile results from a high res set up

Post by LauraMS »

Great 'first worthwhile light' Stu!

Impressive that you get images at that focal ratio. In continuum imaging with my 11 inch I usually work at f/D=22 with my IMX174 camera. If you wanted to try that the Baader 0.7 refucer behind the etalon would get you there...

Good luck for your next solar session - and happy seeing...

Best, Laura


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Re: First worthwhile results from a high res set up

Post by pedro »

Insteressing first HR shots Lou, please keep us posted


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Re: First worthwhile results from a high res set up

Post by Valery »

LauraMS wrote: Fri May 25, 2018 3:54 pm Great 'first worthwhile light' Stu!

Impressive that you get images at that focal ratio. In continuum imaging with my 11 inch I usually work at f/D=22 with my IMX174 camera. If you wanted to try that the Baader 0.7 refucer behind the etalon would get you there...

Good luck for your next solar session - and happy seeing...

Best, Laura
In addition to Laura's recommendation concerning the image scale, I can add that imaging of the promonences
require even smaller scale - to make the image brighter, sharper and to get the exposures as short as possible.


Valery


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gabrieli
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Re: First worthwhile results from a high res set up

Post by gabrieli »

Thanks Laura and Valery for the useful advice. A 0.7X reducer would be ideal since originally I looked at this c9.25 to be used at about 4600mm (with a 2X Powermate), a short jump from my LS152 at 3800mm. I didn't know there were any at that reduction factor but I will look at the Baader.

Lou


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Re: First worthwhile results from a high res set up

Post by Valery »

gabrieli wrote: Sat May 26, 2018 2:07 pm Thanks Laura and Valery for the useful advice. A 0.7X reducer would be ideal since originally I looked at this c9.25 to be used at about 4600mm (with a 2X Powermate), a short jump from my LS152 at 3800mm. I didn't know there were any at that reduction factor but I will look at the Baader.

Lou
I do use a 0,5x GSO simplest reducer with shortened space between it and the camera chip. The shorter the space, the less the reduction. In fact I got three different barrels and this give me the possibility to vary the image scale in a wide enough range.


"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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