Question about a refractor for solar and Astrophotography.

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Question about a refractor for solar and Astrophotography.

Post by aboy »

Hi there.

I don't know if that part of the forum it's the correct one to post this... But here is a question that I have:

I'm looking for a refractor telescope over 1000 F/l well I found this one:

http://www.stellarvue.com/Telescopes/sp ... ospec.html

I want it to add my Coronados filters on the front of the telescope to do my solar and also I want it for Astrophotography...

I'm no sure if any one here try it this telescope before, or know something abou it.

I hope anyone can answer my question :thanx:


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »

Vic at Stellarview makes some damn fine telescopes and that is a good one. However, If you are planning to do astrophotography and if you are going to do Ha with it, It would be better to step up to ED glass or APO. True, it will be more expensive but you will thank yourself later on.

Night sky benefits insanely from ED and APO glass when discerning color and lack of aberration count.

Although not necessary, Ha will also benefit from better glass (ED/APO).

IMHO a 102mm is kinda small for night sky (less planets) unless you get a close match or matched focal reducer with the long focal length, this way you can take in the bigger Nebuli with the good glass. This is just my 2 cents. You will get other opinions.

This question would be better served in the Commercial Solar Filters/Hardware section if Stephen will move it for you.

Best


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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

Oh well... No good for Ha..!!

I don't have money for a ED. for one around 1200 F/l like 5k to up..No way. lol :X

Thanks anyway.


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by Merlin66 »

On my current PST mod I use a Lyra/ TS 102mm f11 achromat.
It works very well - no issues.
I do have an ED80 fitted with the SM60 double stack - which again, works very well.


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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »

:huh: Achros are OK for Ha. They work well. Mark Townley uses his Meade Achro all the time. The only reason I mentioned the ED/APO is Bob Yosley recently posted on CN a diatribe from David Lunt (Lunt Sr.) stating he felt that ED/APO benifited Ha more so than Achros. However, even he conceeded that ED/APO are not "neccessary". A good Achro works fine.

I have shot night sky for years out of my 700 dollar Achro. The results are only OK. They in no way compare to the ED/APO glass for delivering acurate color correction on stars etc. With an Achro on night sky (even a quality one like Vic's) you will be fightig chromatic abbarations and have to employ somthing like a Baader Neyodium to knock down the purple hue that Achros cause around stars and other very bright objects. I will be the last person to knock a good Achro.


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Re: Question about a refractor for solar and Astrophotography.

Post by Merlin66 »

Interesting comment there....
Don't Lunt just use a single element lens on their Ha scopes??????


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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

Well... So for solar will be ok the Achro. :lol:

For astrophography no, for the chromatic abbaration... :(

The reason why I'm asking it's because I want a powerful telescope for my Coronado 60, also I want it to replace my C9.25 HD... I like my C9.25 HD. But it's heavy including the autoguider scope... :blink:

Well I'll try to get the telescope for solar only. :)


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by swisswalter »

Hi Aboy


you will be very happy with a achro doing only solar Jobs. Not so much brand related. Take a fine focuser though


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

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from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »

Ken, I dunno for sure. I understand it that they use (a red blue correced? Ha tuned) singlet as you do. I will see if I can recover the link to Yosely's CN post later. He made the post in the last week or so.


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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

lol.. I was looking at astromart and I found this:

Stellarvue

It's funny cuz in the description said:

SV 102AE-25SV, f/11 (1100mm) Fully Multicoated ED-Glass"Planet Killer" :whistle:

At the end: ED oR not ED that is the question :lol:


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »

Ken, I tried to find the post and can't. If I stumble across it I will link it in. Maybe Bob will see the discussion and repost it here.


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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »



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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

I know. But at this point I have no clue... I can't spend 3k or more on a refracto... My wife will eat me alive if I do that :pinch:

Kevin legore a friend of mine show me this link:

Meade 127ED - Doublet

He told me will woks solar and deep sky...


Any other suggestion anyone??


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »

I am in the same boat as you as far as the wife goes. Money is tight man! That APO stuff is the shizz but would definetly earn me a divorce!

That Meade is pretty nice and the ED glass will help a lot with the color correction at night. I missed out on one last year. Still kinda feel bad about it. Personnaly I would go for one like that if I didn't already have a 127. Get a good focal reducer to go with it and your problem is solved.

My 127 lands me some nice shots and I have a sweet lil 65EDQ for the wide fields. I use them both for solar too. Cuz money be tight, You could live with the Meade 127.


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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

I hear you bro... The money it's really tight :pinch: More and more...

Also I have an AT65EDQ I love that little scope.. I used too to do solar. :rockon:


I hope some one post one and buy it.. I'm not in a rush.. But I'll love to have one soon :woohoo:


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by Merlin66 »

Hmmm
I think David Lunt's comments on achromats may be a bit out of date..
The high end achromats currently being produced (Kunming etc)are excellent optical quality and fully multi-coated.
http://handsonoptics.com/index.php?main ... ts_id=1749

(Edit) Interestingly the same website under "solar telescopes"
Quote
""The LS60THa is a complete Solar Telescope. The refractor based system has a precision aligned singlet chromatic lens with a 60 mm aperture. The front singlet lens reduces the stray-light over an achromat by half. With the matched collimation lens set, it also fully corrects for on axis coma, astigmatism and de-centering aberrations and provides a full spherically corrected flat-field Solar-Telescope.
""
Unquote


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

Hmmm
I think David Lunt's comments on achromats may be a bit out of date..
The high end achromats currently being produced (Kunming etc)are excellent optical quality and fully multi-coated.
http://handsonoptics.com/index.php?main ... ts_id=1749

(Edit) Interestingly the same website under "solar telescopes"
Quote
""The LS60THa is a complete Solar Telescope. The refractor based system has a precision aligned singlet chromatic lens with a 60 mm aperture. The front singlet lens reduces the stray-light over an achromat by half. With the matched collimation lens set, it also fully corrects for on axis coma, astigmatism and de-centering aberrations and provides a full spherically corrected flat-field Solar-Telescope.
""
Unquote

Merlin.

Do you think the astro telescope will be ok to deep sky also?


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by Merlin66 »

If I were spending your money....
I'd buy an ED80 and the matching reducer/flattner.
(I've had one for over seven years and the performance is only marginally below my 25 yo TV Genesis! - They are highly recommended)

The TS102 f11 from Kunming is a thing of beauty! Clean, crisp, solid lines - it looks and feels good and performs excellently with my PST mod and the Baader Solar Wedge. What more can I say....


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Question about a refractor for solar and Astrophotography.

Post by aboy »

But an ED80 it's a small focal length...

Well... Looks like I need to save some money or get the Meade 127ED.


"I'm enough of an artist to draw freely on my imagination. Imagination is more important than knowledge. Knowledge is limited; imagination encircles the world."

--Albert Einstein, October 26, 1929
------------------------------------------------------------

EQ:

Double stack 60mm Coronado ( pre-meade ) H-alpha filters with a 15 blocking filter.

DMK 51AU02 the imaging source Mono CCD camera.

Orion Short 2x Barlow.

Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope.

Astrotelescope ( Planet Killer ) 102mm f/11 hand corrected doublet. Refractor Telescope.

Losmandy - G11 ( Gemini 1 )

FireCapture, AutoStakkert 2, PixInsight, Registack 6 and Photoshop CS 6.
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Re: Question about a refractor for solar and Astrophotography.

Post by sullij1 »

Thanks Ken. ;)(for the info on D.Lunts comments)


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Re: Question about a refractor for solar and Astrophotography.

Post by Merlin66 »

Yeah....that's what you want (and a fast f ratio) for astrophotography..add a x2.5 Powermate and you have a killer Ha scope....


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https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Question about a refractor for solar and Astrophotography.

Post by solarchat »

Lunt uses singlets on the 35 and 60 and doublets on everything larger


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Re: Question about a refractor for solar and Astrophotography.

Post by swisswalter »

Hi Stephen

I can confirm that for the LUNT 100, a doublet, no questions about that


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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