Great results Alfred.
Which Chroma filter have you use?
CS
Alex

Thanks again for the interest and the comments. Sorry, I'm not a very regular on solarchat. I know solarchat from the time before the forum has this form; it was already having very interesting posts and articles. I forgot to mention that the scope is a non aluminized solar newton, on truss structur...

Sorry, I was off yesterday. Thank you for the nice comments. The scope is indeed a 300mm aperture. I was using Neatimage in the past to denoise, the free version however. The free version supports only 8bit. So I decide to denoise under Pix Insight. It allows various denoising possibilities. I used ...

Sorry, I was off yesterday. Thank you for the nice comments. The scope is indeed a 300mm aperture. I was using Neatimage in the past to denoise, the free version however. The free version supports only 8bit. So I decide to denoise under Pix Insight. It allows various denoising possibilities. I used ...

I was quite happy about the picture taken from 3000 altitude (St Véran, French Alps) last year and this year. I wanted to try the same setup in my area, in the "heights" of Belgium, at about 600m altitude. Here, the best result after selecting and some tweaking + image size reduction: http://www.pre...

I was quite happy about the picture taken from 3000 altitude (St Véran, French Alps) last year and this year. I wanted to try the same setup in my area, in the "heights" of Belgium, at about 600m altitude. Here, the best result after selecting and some tweaking + image size reduction: http://www.pre...

Thank you again for the comments. Leo, you would wonder my setup: the mirror is an old mirror from the 80's which has been converted to solar, the truss and other parts are second hand, which I adapted a bit in my garage. The old F6 optic looks to be good and I have a good secondary also. I should g...

Thanks again,

The filter is a Lunt Cak.
The front filters of the Lunt have been replaced by a KLine.
As per the Kline pictures with the same scope, the pictures have been taken from St Véran / France (Alps).

CS
Alex

With a solar newton, the primary is dealuminated and the 96% of the main unreflected flux must be evacuated backwards. The primary support must leave a field open to the maximum. http://www.presencenet.be/nucleus2.0/media/13/20200821-01_20200812_094557_crs.jpg In the first version of the primary mir...

Hi!
Thanks for the comments.
Yes, I used a Baader KLine filter at 396nm (not 296nm!).
CS
Alex.

Thanks.
CS
Alex

Finally, here are the pics taken with a CaK rear filter in the train. The protuberances were more challenging, as the light flux is very low and was mixed up with internal reflection. Forgive me for some stronger photoshop intrusions here. http://www.presencenet.be/nucleus2.0/media/13/20200819-20200...

Hi! Here a first set of pics taken from St Véran (French Alps) with a non aluminized 12" mirror. The pics are taken in KLine (296nm). http://www.presencenet.be/nucleus2.0/media/13/20200819-20200809_02_S01_12_094248_..._Denois.jpg http://www.presencenet.be/nucleus2.0/media/13/20200819-20200814_01_S01...

Hi! Here a first set of pics taken from St Véran (French Alps) with a non aluminized 12" mirror. The pics are taken in KLine (296nm). http://www.presencenet.be/nucleus2.0/media/13/20200819-20200809_02_S01_12_094248_..._Denois.jpg http://www.presencenet.be/nucleus2.0/media/13/20200819-20200814_01_S01...

Thanks for the comments. The results are superior than the one I could achieve in my location. But the conditions were difficult at St Véran and I needed to glue my eyes on the screen all time and catch quieter moments. The CaK is a Lunt mod, meaning that the 2 front filters have been removed and re...

Hi! Here under, some pics from St Véran with a 250mm newton having a multilayer treatment. The seeing conditions were the worst over the last 4 observations there. Here, with a CaK filter. http://www.presencenet.be/nucleus2.0/media/13/20200816-20200808_01_S01_12_095307_....jpg http://www.presencenet...

Hi! Here under, some pics from St Véran with a 250mm newton having a multilayer treatment. The seeing conditions were the worst over the last 4 observations there. Here, with a CaK filter. http://www.presencenet.be/nucleus2.0/media/13/20200816-20200808_01_S01_12_095307_....jpg http://www.presencenet...

We can consider this ad as closed.

The SSM is sold, sorry.
The SM60 adapter and powermate also.
Most of the deep sky stuff also.

CS
Alex

The "classic" for solar imaging is the ASI174MM. It supports 1936X1216@164FPS Full well: 32ke- It is a global shutter camera. The 1600 supports "only" 1920×1680 57.7fps Full well: 20ke- It is a rolling shutter camera. But the 1600 has about twice less read noise which is a + factor. From the numbers...

Hello again :-) Here, a rare instrument for sale: A Baader Mark IV Coronagraph + the passing optic. + ERF 60mm + X-Y excentrer The optic a Zeiss D63mm F840mm. Here some pics. Feel free to ask more. 1000Eur + shipping Payment in Eur over bank transfer (IBAN). Contact per e-mail: allhoest@scarlet.be I...

04_20200428_180955_crs 111.jpg Hi, I have a PST for sale. Here some pics. Feel free to ask more. 400Eur + shipping Payment in Eur over bank transfer (IBAN). Contact per e-mail: allhoest@scarlet.be It looks that the borders are slowly opening. If so, I'll then ship from Germany, which is normally ch...

I LOVE prom animations.
This one is very dynamic; great job!
Yes, it time consuming.
CS
Alex

Your Ha double stack is very uniform and also your SM40 and SM60+SM40 provide outstandingly fine results.
CS
Alex

Excellent Freddie.
I come with the same question: can you provide details about your setup.
Thank you.
CS
Alex

Beautiful
CS
Alex