SolarChat!

bart1805

Well, I must say that you give the definition of "aperture fever" a whole new meaning. (-; Interesting approach, a battle between a normal Newton with a D-Erf and a Newton with a special coating like The T250 Solar Newton presented here. The coatings were done by MCM Optique in France. The...

bart1805

Just managed to take one AVI this morning, seeing was quite terrible. But a nice spot! Baader Astrosolar ND3.8 _ Rumak 9 inch f/13,5 _ Astronomik Red Filter _ ASI290MM Thanks for watching! Bart. https://live.staticflickr.com/65535/32889618627_7dc9273ca3_c.jpg Sun_094859_120519_Gain=12(off)_...

bart1805

christian viladrich wrote: ↑Sat May 11, 2019 9:17 am So did you find a significant improvement ?

Hard to say if it really makes the images better. Seeing is everything.....
But it seems a bit easier to focus: it snaps more in and out of focus, so that is good news.

bart1805

christian viladrich wrote: ↑Fri May 10, 2019 8:33 pm Well done Bart !
Is it with the change of distance between the lenses ?

Thanks Christian. Yes, it was the second session after I doubled the distance between the lenses. Here is the first one:
viewtopic.php?f=4&t=26041

bart1805

Can't tell you that. I suppose it is a ND5.0 filter made out of glass? Then your exposure time would be substantially longer. So more effect of the seeing.
Normally only quite expensive glass filters can compete with the advantages of Astrosolar.

bart1805

Hi Martin,
Yes, you would get better results: bigger aperture.
You would need the Baader ND3.8 Astrosolar. This is just for imaging, not visual.
You can buy a complete filter or a sheet of Astrosolar. Then you would have to make your own holder.
BTW: nice images, that 2741 is a real beauty.
CS! Bart.

bart1805

Hi Franco, Sync to target is useful when your slew to target is a bit off. So imagine you want to look at M31. Your mount is in the zero position, polar alignment is as good as you can get it. You let the telescope slew to M31. But you are a bit off. So you have to slew manually to M31. When it is i...

bart1805

Absolutely beautiful!
And I agree with Alexandra about that beautiful phenomenon.
But please: blow those tiny dust speckles away. (-;
One question. What did you use as the trigger and (I forgot the name of the other) value? Were you not afraid that there could be big gaps between the different avi's?

bart1805

Great images!

bart1805

Hi Bart: I like it ! You can also use it as a finder with large scopes, as it makes finding the sun very easy. It tracks the sun very well, I think it made a difference for me in many images. Now I am thinking of upgrading the mount. Franco Thanks Franco! Finding the sun is not a problem, but becau...

bart1805

I reacted on this post in the SPOD section, not the right place of course.
Franco: congratulations, great images! And as I said: there are no better reasons to be late at work than these four.

bart1805

Truly magnificent! thanks for a wonderful view :bow Alexandra Thanks Maurits and Alexandra. Two new images: https://live.staticflickr.com/65535/32869290867_fb813f737e_c.jpg Sun_102946_090519_Gain=0_Gamma=63_Exposure=7,6_Drizzle15 by bart moors , on Flickr https://live.sta...

bart1805

Just one successful AVI this morning, conditions were not good, but good enough when shooting this one. Celestron 100mm f/9 ED _ Lunt Nosepiece with the two filters _ PST#1 _ PST#1 _ ASI290MM Used 1,5x Drizzle in AS!3. https://live.staticflickr.com/65535/33933473648_ffa5ac2a55_c.jpg Moon_101723_0905...

bart1805

What a brilliant session! There could be no better reason to be late.

bart1805

Was not satisfied with the collimation of the telescope. This evening I used this little toy: https://www.teleskop-express.de/shop/product_info.php/language/en/info/p5506_TS-Optics-Concenter-2--Collimation-Eyepiece-for-Newtonian-Telescopes.html So when weather and time allows I can compare the Newto...

bart1805

Thanks!
Looking forward to try what the results are of tilting the filters.

bart1805

What a beautiful limb! And nice additions indeed.

bart1805

Beautiful Franco and an impressive set-up!
How do you like the Hinode?

bart1805

Nice catch!

bart1805

Really beautiful H-alpha disk. It has to be the combination of a very good PST plus your capability of processing these full disks really good!

bart1805

TS sells them indeed. I ordered this one when I bought the 160mm Baader D-Erf. It is perfect.
https://www.teleskop-express.de/shop/pr ... 161mm.html

bart1805

so a powermate works for enhancing f ratio? why then bothering with expensive refractors when you could use a big newton reflector with an aries front-d-erf and pump the f-ratio with a powermate to f/11 or so? These small refractors are not expensive, compared to the big Erf's and other filters you...

bart1805

Very sharp image, Bart, spicules, prominence and penumbra filaments came out well. It seems really promising. Just to complete the picture try to see what happens to the other colors, green and red, if they now show spherical aberration and how much. Yes, it looks promising! Good idea to test the o...

bart1805

marktownley wrote: ↑Sun May 05, 2019 11:48 am Nice shot Bart! the spicules are coming out well. Where did you get the tilt adapters from in the end?

These two are made by Beloptik. The two other adapters by Gerd Neuman (Astronomik Filters).

bart1805

krakatoa1883 wrote: ↑Thu Apr 25, 2019 4:20 pm Keep us informed, Bart, I am very curious to see the results.

First try this morning, it seems an improvement.
viewtopic.php?f=4&t=26041

bart1805

This morning it was hit and run between the clouds. But I desperately wanted to try if doubling the distance between the lenses of the 100mm f/9 ED worked or not. Seeing was not bad, no time to use the SSM. Just a few moves of 30 seconds each. Yesterday I also received the first two tilt adapters, t...

bart1805

Opened the lens cell of the Celestron 100mm f/9 ED. There was a shim ring between the lenses. So cut 6 small pieces, glued them together to make three small shims and put everything back. Very tight lens cell so it took quite some time. Distance is now twice as big, now waiting for a moment to test ...

bart1805

It could be that one or two of the pre-blocking filters are degraded. That is why I asked if you changed the two inch nosepieces, they screw of easily. If you want to make a straight through version (better for imaging as Bob suggested), this is how I did it: https://solarchatforum.com/viewtopic.php...

bart1805

A beautiful example that size is not everything.
And thanks for your IMPPG screenshot, interesting to see your settings.

bart1805

Bravo on the granulation shot Bart. Looks like your going to have some fun with that particular scope! Thanks Christopher and Pedro. Looking forward to using the scope on the moon, planets and the sun. Bought it in june last year, tried it out for a couple of weeks. And then decided to change the f...

bart1805

Maybe this is interesting Franco:
https://www.cloudynights.com/classified ... t-ls50tha/' title='Feather Touch Focuser for Lunt LS50THa

bart1805

Wow! the granulation is amazing! I think your bad seeing is the same as my good seeing ;) Alexandra Thanks all! Alexandra, since using the SSM my idea of good and bad seeing is shifting a bit. When I look at the SSM, it jumps up and down. So when the average seeing is bad, there are still a few mom...

bart1805

christian viladrich wrote: ↑Mon Apr 22, 2019 5:22 pm Excellent first light !
A 10"ERF might be of use for this scope.

Thanks Christian. Yes, it would definitely be of use! But to fund it I would have to sell the Rumak. (-;

bart1805

Did you try Stuart's Lunt nosepiece (the one with the tw bigger filters) with your B1800?

bart1805

Nice Stu! In the presentation here there is some kind of grid visible in the first two pictures, but everything looks fine on Flickr. How nice of you to paint the first letter of your guest on the CaK surface of the sun. It is there at 7 o'clock looking at the small AR. Was it some kind of easter eg...

bart1805

MalVeauX wrote: ↑Sat Apr 20, 2019 10:25 pm
bart1805 wrote: ↑Sat Apr 20, 2019 9:36 pm Nice!
Is that the famous 0,1nm Chroma filter Bob is experimenting with? And you were able to get your hands on a PST #1 filter?
Yup! The 0.1nm Chroma. The PST filter is on loan.

Very best,

Cool! I thought you had the 1nm version and used that as an erf.

bart1805

A very nice scope and a killer granulation shot, Bart ! What etalon did you use for the Ha ? Franco Hi Franco, thanks! Baader D-erf - Baader 35nm H-alpha - Baader 1,25x glasspath - PST etalon - Lunt B1200 - ASI290MM. So a normal PST etalon. At the moment Gerd Neuman (Astronomik) is rebuilding a fil...

bart1805

marktownley wrote: ↑Mon Apr 22, 2019 2:03 pm Looks like you're having fun Bart! Nice images. What fl and camera with the WL shot?

Indeed Mark! Forgot to mention it: prime focus so about 3100mm. ASI290MM.
Besides the Red filter I also used a 2 inch Beloptik UV/IR cut on kg3.

bart1805

Today I tried out the 9 inch Rumak. Optics are made by Intes: MK-91. So it is a 9 inch f/13,5 Rumak. Rebuild (not by me) in a 33cm diameter double Carbon tube. The inside of the Tube is isolated. Heavy machine: about 14kg. But for the Cem 60 it is no real problem: https://live.staticflickr.com/65535...

bart1805

Nice!
Is that the famous 0,1nm Chroma filter Bob is experimenting with? And you were able to get your hands on a PST #1 filter?

bart1805

Merlin66 wrote: ↑Wed Apr 17, 2019 11:28 pm Bart,
I should have said my ol' ACER didn't have USB3 ports.......

Yes, I forgot that too. USB3 is crucial!
And I should have said that I swapped the original 256 SSD for a bigger one. Everytime the free disk space was lower than 100 the fps dropped significantly.

bart1805

There is no need for an expensive gaming machine. I use an Acer Aspire V3-371-39C5. Swapped the drive for a fast SSD and dropped in extra RAM memory. Maximum fps is no problem.

bart1805

33ms, that is surprisingly long. I did not think it was possible to get sharp images with such a long exposure time. Have to try that myself.

bart1805

Wow, 5 and almost 6 meters of focal length..... Was the seeing that good?

bart1805

Thanks Brian and Marty!

bart1805

Impressive Peter, compliments!

bart1805

What a beautiful question mark!
I like the sodium image. Is it difficult to process?

bart1805

Nice one Raf! What exposure time are you using with this set up?

bart1805

What a difference! CaK full disks are nice!

bart1805

christian viladrich wrote: ↑Mon Apr 15, 2019 7:01 pm Hello Bart,
I prefer the one without drizzle. Inverse granulation is lost in the drizzle version.

You are right Christian, I did not notice it before you mentioned it. Should try and reprocess the drizzled version. Thanks! Bart.

Search found 636 matches