Intes 703 for H-alpha, some experiments

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bart1805
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Intes 703 for H-alpha, some experiments

Post by bart1805 » Sun Jun 02, 2019 10:00 pm

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:

Image20190602_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.

Image20190602_100315_resized by bart moors, on Flickr

And the total package:

Image20190602_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.

Image103631_010619_Gain=0(off)_Exposure=1 by bart moors, on Flickr

Image090615_020619_Gain=0(off)_Exposure=.7ms_Gamma=76(off)_l4_ap7435 by bart moors, on Flickr

ImageMoon_092020_020619_Gain=20(off)_Exposure=2 by bart moors, on Flickr

Thanks for watching! Bart.

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Re: Intes 703 for H-alpha, some experiments

Post by marktownley » Mon Jun 03, 2019 5:47 am

These are great shots Bart! Looks like the Intes is a good scope.
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Re: Intes 703 for H-alpha, some experiments

Post by bart1805 » Mon Jun 03, 2019 9:16 am

marktownley wrote:
Mon Jun 03, 2019 5:47 am
These are great shots Bart! Looks like the Intes is a good scope.
Thanks Mark! And yes, even with the huge central obstruction the quality seems better than with the 150mm SW.

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Re: Intes 703 for H-alpha, some experiments

Post by Montana » Mon Jun 03, 2019 11:14 am

Absolutely beautiful images Bart :hamster: :bow

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Re: Intes 703 for H-alpha, some experiments

Post by MalVeauX » Mon Jun 03, 2019 2:13 pm

Really nice Bart!

Very best,

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Re: Intes 703 for H-alpha, some experiments

Post by ffellah » Mon Jun 03, 2019 3:59 pm

It looks like your experiments turned out really well, Bart.

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Re: Intes 703 for H-alpha, some experiments

Post by Ronnie_Clayton » Mon Jun 03, 2019 4:32 pm

Beautiful images Bart. nice resolution e details. It seems that you´ve a nice PST etalon too...

Ronnie

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Re: Intes 703 for H-alpha, some experiments

Post by bart1805 » Mon Jun 03, 2019 5:50 pm

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.

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Re: Intes 703 for H-alpha, some experiments

Post by MAURITS » Mon Jun 03, 2019 6:20 pm

Very nice detailed images Bart.
Regards,
Maurits

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Re: Intes 703 for H-alpha, some experiments

Post by ffellah » Mon Jun 03, 2019 8:06 pm

Congratulations on the beautiful SPOD, Bart !

Franco
Last edited by ffellah on Mon Jun 03, 2019 9:07 pm, edited 1 time in total.


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Re: Intes 703 for H-alpha, some experiments

Post by MapleRidge » Tue Jun 04, 2019 12:52 am

Hi Bart...

These are excellent images from the Intes scope...very promising indeed :bow

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Re: Intes 703 for H-alpha, some experiments

Post by bart1805 » Tue Jun 04, 2019 5:23 am

Thanks Brian, Franco and Pedro. And thanks for the SPOD!

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Re: Intes 703 for H-alpha, some experiments

Post by Montana » Tue Jun 04, 2019 6:57 am

Super SPOD :hamster:

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Re: Intes 703 for H-alpha, some experiments

Post by Carbon60 » Tue Jun 04, 2019 6:56 pm

Excellent, Bart. Nice new setup. Lots of fine filamentous details in these images.

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Re: Intes 703 for H-alpha, some experiments

Post by yltansg » Wed Jun 05, 2019 1:43 am

Hi Bart,

Superb captures and processing. Congrats on the SPOD!!

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Re: Intes 703 for H-alpha, some experiments

Post by Astrophil » Wed Jun 05, 2019 1:54 pm

Very nice images, Bart. That system works. Looking forward to more images.

Phil

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Re: Intes 703 for H-alpha, some experiments

Post by oreoluna » Fri Jun 07, 2019 5:38 pm

Hi Bart.
Big cinema. Congrats on the SPOD :bow :bow :bow :bow
Regards
Jozef

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