Today's H-alpha SUN (20210214) | single/double/triple Stack

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pedro
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Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by pedro »

Today's H-alpha SUN (20210214) | single/double/triple Stack

WEB LINK:
http://pedroreastrophotography.com/sun_ ... 21-02.html


Solar imaging session (20210214) | Pedro RE'
TV101, PRONTO70, LUNT60 (SINGLE/DOUBLE/TRIPLE STACK)
GS3-U3-28S4M, Takahashi EM-400
http://pedroreastrophotography.com/


Solar imaging session (20210214) | Pedro RE'
TV101, PRONTO70 (SINGLE/DOUBLE STACK)
GS3-U3-28S4M, Takahashi EM-400
http://pedroreastrophotography.com/

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IMAGING SETUPS

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IMAGING SETUPS

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IMAGING SETUPS

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IMAGING SETUPS

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IMAGING SETUPS

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IMAGING SETUPS

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IMAGING SETUPS

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IMAGING SETUPS

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OBSERVATORIES (MAVIC 2 PRO)

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SUN (20210214) H-alpha PROMS (10:00 UTC). LUNT60, TS SM60/SM40, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20210214) H-alpha PROMS (10:00 UTC). LUNT60, DS SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20210214) H-alpha PROMS (10:00 UTC). LUNT60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20210214) H-alpha PROMS (10:00 UTC). PRONTO70 F/6.8, SM60, DS SM40, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20210214) H-alpha PROMS (10:00 UTC). PRONTO70 F/6.8, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20210214) H-alpha PROMS (10:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M
Last edited by pedro on Sun Feb 14, 2021 6:28 pm, edited 2 times in total.


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by Alto »

Certainly an increase in contrast and detail as the images stack up!


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by Highbury Mark »

Excellent detail and comparison of set ups Pedro. 60mm double stack would be my choice of the three, but triple stack is still impressively bright and detailed considering the 40mm aperture


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by pedro »

Thanks guys


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by arnedanielsen »

Very interesting to see the different stacks!

Great work. Thanks for sharing, Pedro.

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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by DeepSolar64 »

The triple stack certainly has the contrast but seems to lack a little on the resolution compared to the double stack. Thumbs up on the Pronto!


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by pedro »

Thanks again guys

The triple stack image has a good contrast but low definition (lots of glass | 3 etalons)


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by dhkaiser »

Yeah I would stick with the DS Pedro, although they all are nice.


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by christian viladrich »

Excellent ! Thanks for sharing.


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by MalVeauX »

Sweet comparison Pedro, love it!

The double stack is the best balance of chromosphere and resolution. While the triple stack shows supreme contrast on chromosphere features, it came at a compromise as the features themselves seems blurred, maybe from capture time from dim transmission? Not sure.

Very best,


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by MapleRidge »

Hi Pedro...

This session produced excellent images...well done :bow

The TS shows the most contrast, just came out soft compared to the DS image.

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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by DeepSolar64 »

MalVeauX wrote: Sun Feb 14, 2021 10:06 pm Sweet comparison Pedro, love it!

The double stack is the best balance of chromosphere and resolution. While the triple stack shows supreme contrast on chromosphere features, it came at a compromise as the features themselves seems blurred, maybe from capture time from dim transmission? Not sure.

Very best,
It could be the 40mm aperture to in part. The smaller the aperture the less the resolution. We are not downing the triple stack image Pedro, the contrast is excellent but as with most things when you gain something you lose something. It's often a compromise.


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by EGRAY_OBSERVATORY »

Agreeing with the many replies Pedro, the DS is my fav, albeit some excellent contrast with the TS.

interesting and thanks for that threesome !!

Cheers
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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by yltansg »

Thanks Pedro for the interesting presentation. Like the aerial view of your observatory and setup configuration. Great job!!

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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by marktownley »

Very nice Pedro! They came out well. I too got that soft fuzzy view when I tried triple stacking, I just think it is because there is so much glass.


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by Carbon60 »

Excellent images, Pedro. Interesting to see the effect of triple stacking. Presumably the exposure times increase quite significantly with more glass and three etalons. Is it this that gives more blurring?

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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by christian viladrich »

MalVeauX wrote: Sun Feb 14, 2021 10:06 pm Sweet comparison Pedro, love it!

The double stack is the best balance of chromosphere and resolution. While the triple stack shows supreme contrast on chromosphere features, it came at a compromise as the features themselves seems blurred, maybe from capture time from dim transmission? Not sure.

Very best,
Indeed, as the bandpass is reduced, the details become fuzzier. This is because a higher height in the chromosphere is sampled. When going upward from the photophere, the magnetic tubes expand, which explains this fuzzier appearance.

This beeing, this is probablly one part of the explanation, the other part beeing the smaller aperture (40 mm vs 60 mm).


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Re: Today's H-alpha SUN (20210214) | single/double/triple Stack

Post by Montana »

The triple stack is a winner but yes, a bit more fuzzy :hamster: :bow

Alexandra


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