Quite some experiments last days. This weekend I tried the Intes M703 for H-alpha. Way much easier to transport into the garden than the long 150mm Skywatcher achromat. The imaging train is way less heavy and the optical quality seems better than that of the 150mm f/8 SW.
Here is how it looks.
Made quite some time ago (out of wood) an "adapter" I could mount on to the Intes. That way the 7 inch Intes can hold the 160mm D-Erf easily. Here is how it looks:
20190602_100328_resized by bart moors, on Flickr
The imaging train from right to left:
- adapter with SCT thread on the fron, PST thread on the back
- PST etalon
- PST tot SCT adapter
- JMI focuser
- Lunt Blocking filter
- ASI290mm.
20190602_100315_resized by bart moors, on Flickr
And the total package:
20190602_100609_resized by bart moors, on Flickr
Three images, first one was Saturday, the other two were made today. On Saturday the seeing was way better, but transparency worse. So longer exposure time. Less images in the stack of the first image, so way more noise.
Today transparency was quite good, shorter exposure time, but a lot more reflections. Interesting to see that where the reflection is, the spicules are sharper. Much room for improvement, but I like where this is going to. It was really easy to see both the spicules / prom and the activity on the sun itself, easier than when using the Skywatcher. And even when I changed the Gamma to maximum, the spicules and proms where clearly visible.
Focussed the Intes so that the focal point was 20 cm behind the first adapter. Have to experiment if that is the right position, considering I use a 160mm Erf on a 7 inch f/10 telescope.
103631_010619_Gain=0(off)_Exposure=1 by bart moors, on Flickr
090615_020619_Gain=0(off)_Exposure=.7ms_Gamma=76(off)_l4_ap7435 by bart moors, on Flickr
Moon_092020_020619_Gain=20(off)_Exposure=2 by bart moors, on Flickr
Thanks for watching! Bart.
Intes 703 for H-alpha, some experiments
- marktownley
- Librarian
- Posts: 42274
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20442 times
- Been thanked: 10248 times
- Contact:
Re: Intes 703 for H-alpha, some experiments
These are great shots Bart! Looks like the Intes is a good scope.
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
-
- Almost There...
- Posts: 636
- Joined: Mon Feb 06, 2017 9:04 pm
- Location: The Netherlands
- Been thanked: 1 time
Re: Intes 703 for H-alpha, some experiments
Thanks Mark! And yes, even with the huge central obstruction the quality seems better than with the 150mm SW.marktownley wrote: ↑Mon Jun 03, 2019 5:47 am These are great shots Bart! Looks like the Intes is a good scope.
- Montana
- Librarian
- Posts: 34563
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17672 times
- Been thanked: 8794 times
- MalVeauX
- Way More Fun to Share It!!
- Posts: 1858
- Joined: Tue May 09, 2017 7:58 pm
- Location: Florida
- Has thanked: 1171 times
- Been thanked: 1360 times
- ffellah
- Way More Fun to Share It!!
- Posts: 11176
- Joined: Mon Oct 27, 2014 6:46 pm
- Location: Westport, CT USA
- Has thanked: 9149 times
- Been thanked: 6027 times
Re: Intes 703 for H-alpha, some experiments
It looks like your experiments turned out really well, Bart.
Franco
Franco
- Ronnie_Clayton
- Ohhhhhh My!
- Posts: 174
- Joined: Thu Aug 24, 2017 11:00 pm
- Location: Maringá - Brazil
- Has thanked: 10 times
- Been thanked: 130 times
Re: Intes 703 for H-alpha, some experiments
Beautiful images Bart. nice resolution e details. It seems that you´ve a nice PST etalon too...
Ronnie
Ronnie
-
- Almost There...
- Posts: 636
- Joined: Mon Feb 06, 2017 9:04 pm
- Location: The Netherlands
- Been thanked: 1 time
Re: Intes 703 for H-alpha, some experiments
Thanks all!
I agree Franco, this could be the end of the 150mm Skywatcher as my H-alpha telescope.
Ronnie, hard to judge if it is a good etalon. I have two, this one seems a bit better than the other one. But the difference is not extreme.
I agree Franco, this could be the end of the 150mm Skywatcher as my H-alpha telescope.
Ronnie, hard to judge if it is a good etalon. I have two, this one seems a bit better than the other one. But the difference is not extreme.
- MAURITS
- Way More Fun to Share It!!
- Posts: 8507
- Joined: Tue Nov 27, 2018 4:37 pm
- Location: Belgium
- Has thanked: 2412 times
- Been thanked: 4787 times
- Contact: