Solar harvest 24th September 2022

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Montana
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Solar harvest 24th September 2022

Post by Montana »

3hrs of work in a beautiful blue sky

125mm aperture / TZ4 / SolarSpectrum / ASI174

ImageSun_095045_24_09_2022 by Alexandra Hart, on Flickr

Don't talk to me about it, I'd rather sell everything and stick to the PSTs and sketching :evil:

Alexandra


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Re: Solar harvest 24th September 2022

Post by marktownley »

I can see how this is frustrating but c'mon and elaborate more...


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Re: Solar harvest 24th September 2022

Post by arnedanielsen »

Sounds frustrating, Alexandra!

Temperature regulation issues?

Best regards,
Arne


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Re: Solar harvest 24th September 2022

Post by Montana »

Arne, yes! and the TZ4 as well. I'm probably doing something daft though as nothing works.

Alexandra


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Re: Solar harvest 24th September 2022

Post by arnedanielsen »

That's really frustrating. Hope you are able to sort out the problems Alexandra!

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Arne


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Re: Solar harvest 24th September 2022

Post by MAURITS »

Indeed frustrating Alexandra.

I think there must be something wrong with the space between the TZ4 and the SolarSpectrum.

A while back I had the same problems with that combination.


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Maurits

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Re: Solar harvest 24th September 2022

Post by DeepSolar64 »

I understand your frustration. I was there just the other day. I felt like giving up. But press on. You are a very skilled and capable imager. And you sketch fine too!

Bless you.

James


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Re: Solar harvest 24th September 2022

Post by pupak »

TZ4 is designed for F7-F8. If you have a telescope with a different aperture, then the TZ4 does not work properly and neither does the etalon. What is the brightness of the OTA?


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Re: Solar harvest 24th September 2022

Post by ffellah »

Hi Alexandra: when the conditions allow, I will try same combination and let you know the result. We have the same SS filter. It all seems rather strange to me. :roll:

Franco


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Re: Solar harvest 24th September 2022

Post by Montana »

Thanks guys :) any help is much needed.

Pupak, I have an F7 refractor but the aperture is slightly clipped by the ERF so it becomes around F9.

Alexandra


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Re: Solar harvest 24th September 2022

Post by Radon86 »

Hi Alexandra,

I don't have a solar spectrum filter, but understand it is a H-alpha filter.
The image you show may indicate a light leak, just a guess.

Maybe someone can evaluate your solar spectrum and your imaging setup ?

Magnus


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Re: Solar harvest 24th September 2022

Post by pupak »

Montana wrote: Mon Sep 26, 2022 11:44 am Thanks guys :) any help is much needed.

Pupak, I have an F7 refractor but the aperture is slightly clipped by the ERF so it becomes around F9.

Alexandra
The TZ4 has an optimum F7.5, F9 is already quite outside the optimum, but your picture probably indicates a different problem. Reflections, bad focal plane at the TZ4 input, or vice versa at the TZ4 output. That's where I'd look for a problem.

Petr


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Re: Solar harvest 24th September 2022

Post by gabrieli »

Hi, Alexandra

I’m sorry that there’s been such a huge change in direction about your imaging activities.

I know that “talking about it” might feel like doing surgery on yourself but there be a lot of insight on this board that might be helpful if you do. Why not start with an image of the bottom end of your setup. I haven’t used my SS 0.5 Å much due to time and weather constraints, only enough to show that it works( proms are darker than I thought but I haven’t really calibrated it yet). I use a Powermate 4X instead of a tele centric.
Of course, when I started using it, I did something “daft”. I used an exterior blocking filter not realizing that a blocker was already built in to the SS filter and I sat there wondering why the image was so dark.

Didn't you post a series of images a long while ago taken with this filter looking for the best temperature setting? They looked "on band" to me.
Given how your image looks now, I think, as stated by others. that the problem is in whatever is causing the output image to look like a white light image, namely the temperature controller.
Have you spoken to anyone from Solar Spectrum ([email protected]) ?

Lou


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Re: Solar harvest 24th September 2022

Post by eroel »

Alexandra:
Well we always have problems with our equipments, but there is always a way out to get things going again.
Your SolarSpectrum Ha filter is a super one, mainly it looks like a heating problem, so get in touch with Mark, he will fix it quick.
Wish you a rapid solution, so you can use it and show us your splendid solar work with that filter.
Best regards,
Eric.


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Re: Solar harvest 24th September 2022

Post by AndiesHandyHandies »

Hi

Baader assume that customers will be observing/imaging preferably at F30. So the TZS are 2x F15 (Zeiss 6"), 3x F10 and 4x F 7.5. CV shows that they get better at longer Fnos anyway. For F40 2x F20, 3X F13, 4X F10.

Cheers. Andrew.


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Re: Solar harvest 24th September 2022

Post by AndiesHandyHandies »

Hi

Also as CV says the etalon has to be close to orthoganol to the optical axis.

For the PST Mod2

Using auto-collimation works for me. On the Rumak180 it made a huge improvement in the visible tuning and so contrast, using the mirror adjustments. Also did it on the Meade 127mm Triplet with a tilter. Not messing about with the objective.

Cheers. Andrew.


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Re: Solar harvest 24th September 2022

Post by Martin_S »

Alexandra, did you make up a 230mm projection tube with a mask to find focus with your TZ4 in the telescope?

Once you have a sharp disk on your mask you know that the TZ4 is in the right position in your optical train ( this is very important).

If your disk is not sharp your TZ4 is at fault.

The camera chip should be around 220mm from the TZ4, the etalon goes between the TZ4 and the camera.

If you have done all this and it's still not working, you have eliminated at least one aspect of your problem.

Martin
Last edited by Martin_S on Tue Sep 27, 2022 11:05 am, edited 1 time in total.


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Re: Solar harvest 24th September 2022

Post by DavidP »

Alexandra. Correct TZ4 spacing is a bit confusing. I haven’t seen their most recent recommendations, but at one time Baader had the spacing specs published wrong.
Mark Wagner explains the correct spacing and a good procedure for finding it here:
https://www.cloudynights.com/topic/6596 ... ic-system/
BTW. With regards to telescope focal ratio, I use an f/11 refractor+ TZ4+Solarspectrum with very good results. Even oversampling with the ASI174.


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Re: Solar harvest 24th September 2022

Post by torsinadoc »

DavidP wrote: Tue Sep 27, 2022 3:46 am Alexandra. Correct TZ4 spacing is a bit confusing. I haven’t seen their most recent recommendations, but at one time Baader had the spacing specs published wrong.
Mark Wagner explains the correct spacing and a good procedure for finding it here:
https://www.cloudynights.com/topic/6596 ... ic-system/
BTW. With regards to telescope focal ratio, I use an f/11 refractor+ TZ4+Solarspectrum with very good results. Even oversampling with the ASI174.
I followed the procedure and made a tube for my TZ3 and TZ4. Here is a image of my set up with the TZ-3. Some where on this forum I have a image of the tube. I need to 3d print an adjustable tube to use for the TZ4 (220mm) and TZ3 (250mm)

ImageIMG_0160 by Torsinadoc, on Flickr


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