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Equipment Discussions >> Electronically Assisted Astronomy

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
A good clear night.
      #6342127 - 01/28/14 11:44 PM Attachment (55 downloads)

Managed to get several captures of varied objects this last Sunday night.
These are all taken through an Explore Scientific AR152 with Astro-Systems MKIII camera and .63 reducer.
First up is the Flame Nebula/NGC2024


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342128 - 01/28/14 11:45 PM Attachment (36 downloads)

NGC 3628

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342129 - 01/28/14 11:46 PM Attachment (28 downloads)

NGC 3115

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342131 - 01/28/14 11:46 PM Attachment (29 downloads)

M105

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342133 - 01/28/14 11:47 PM Attachment (26 downloads)

M96

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342137 - 01/28/14 11:48 PM Attachment (21 downloads)

M78

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342139 - 01/28/14 11:49 PM Attachment (28 downloads)

M66

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342141 - 01/28/14 11:49 PM Attachment (20 downloads)

M65

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6342143 - 01/28/14 11:50 PM Attachment (28 downloads)

M61.
This is the last from the night of captures.
I had a lot of fun and the temp stayed at 48 so not too bad.
The camera seemed to do much better in the refractor than the Newt astro-graph.
I will need to try again and see if it's my setup or not.

Edited by John59 (01/28/14 11:58 PM)


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: A good clear night. new [Re: John59]
      #6342328 - 01/29/14 03:54 AM

You have been busy John - well done - excellent results:-) Any chance of a shot of the camera and some exposure times on those images? :-)

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Dragon Man
Carpal Tunnel
*****

Reged: 03/07/06

Loc: Snake Valley, Australia
Re: A good clear night. new [Re: nytecam]
      #6342367 - 01/29/14 04:28 AM

John, put them all in the Gallery including the Gear info. That way they won't get lost in the Forum.


That's what the Gallery is there for. Non Post-processed screen grabs.


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StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: A good clear night. new [Re: Dragon Man]
      #6342471 - 01/29/14 06:55 AM

Nice pics! No M82 w/SN?

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pdfermat
scholastic sledgehammer
*****

Reged: 11/12/07

Loc: Wisconsin
Re: A good clear night. new [Re: StarStuff1]
      #6342952 - 01/29/14 12:03 PM

Nice work - I love the details you are getting in those galaxies!

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A. Viegas
Pooh-Bah
*****

Reged: 03/05/12

Loc: New York City/ CT
Re: A good clear night. new [Re: pdfermat]
      #6343192 - 01/29/14 01:46 PM

John

Are all the exposures The same integration time?

Al


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Chris A
Pooh-Bah


Reged: 02/03/07

Loc: Toronto, Canada
Re: A good clear night. new [Re: A. Viegas]
      #6343477 - 01/29/14 03:51 PM

You sure have been busy with your new camera John. A nice set of images and like others have mention if you can please post the integration times for all images and what was the focal ratio of your setup used? Thank you!

Chris


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: StarStuff1]
      #6344373 - 01/30/14 12:13 AM

Quote:

Nice pics! No M82 w/SN?



Unfortunately my north view is blocked by large trees.
I actually keep a tunnel cut through the folage to see Polaris in order to perform polar alignment of my EQ.


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: nytecam]
      #6344380 - 01/30/14 12:24 AM

Quote:

You have been busy John - well done - excellent results:-) Any chance of a shot of the camera and some exposure times on those images? :-)



I will place the captures in the gallery as Ken has suggested and all the equipment data as well.


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: A. Viegas]
      #6344385 - 01/30/14 12:26 AM

Quote:

John

Are all the exposures The same integration time?

Al



Integration times were the same but gain values changed.
I am adding the captures to the gallery with more detailed data.


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jimthompson
member


Reged: 10/06/09

Loc: Ottawa, Canada
Re: A good clear night. new [Re: John59]
      #6344761 - 01/30/14 09:30 AM

Hi John,

I find this object (M78) to be extremely difficult to capture, at least from my light polluted location. Good job!

Jim Thompson


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: nytecam]
      #6346215 - 01/30/14 10:41 PM Attachment (8 downloads)

Quote:

You have been busy John - well done - excellent results:-) Any chance of a shot of the camera and some exposure times on those images? :-)



Added the captures to the gallery and here is a pic of the camera on my refractor


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: John59]
      #6346220 - 01/30/14 10:44 PM

Thank you everyone for the kind words and support!
This group is still the best!


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BigDob Al
super member


Reged: 12/31/13

Re: A good clear night. new [Re: John59]
      #6357552 - 02/05/14 12:04 PM

John59, you got some amazing captures . When I first saw them I thought they were coming from a much more expensive camera and scope . I looked at the vendor's website and I'm very tempted to pull the trigger . I could feel I'm actually just delaying the inevitable and will end up ordering one .
I was wondering how good of a mount do you estimate is needed for your camera? I've watched some great views on NSN from people with guiding mounts in fixed obs , that's not what I could afford right now. Your setup seems more like the portable stuff I had in mind . How deep could you go with short integration , say 10-30 sec? My main scope is a dob with alt/az tracking which isn't that great . Higher sensitivity shorter integration is what the doctor ordered for me.

Clear Skies,
Al


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Relativist
Post Laureate
*****

Reged: 10/11/03

Loc: OC, CA, USA
Re: A good clear night. new [Re: BigDob Al]
      #6357854 - 02/05/14 02:46 PM

Al, I'm new to video as well, but one thing I've learned by watching live video online is that f/ratio and especially focal length are very important to getting quick captures. A reducer can help a lot of course so you might want to consider that upfront. Every now and then I've seen people with big (20"+ dobs) broadcast successfully on alt/az mounts, so you'd be in good company.

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: BigDob Al]
      #6358791 - 02/06/14 12:00 AM

Quote:

John59, you got some amazing captures . When I first saw them I thought they were coming from a much more expensive camera and scope . I looked at the vendor's website and I'm very tempted to pull the trigger . I could feel I'm actually just delaying the inevitable and will end up ordering one .
I was wondering how good of a mount do you estimate is needed for your camera? I've watched some great views on NSN from people with guiding mounts in fixed obs , that's not what I could afford right now. Your setup seems more like the portable stuff I had in mind . How deep could you go with short integration , say 10-30 sec? My main scope is a dob with alt/az tracking which isn't that great . Higher sensitivity shorter integration is what the doctor ordered for me.

Clear Skies,
Al




Al,
Don't discount the alt/az dob.
I used video on my 12" goto dob with great results.
The current camera works great with my Celestron NexStar 8SE which is alt/az.
If you never intend to go AP or get a video camera that can do long exposure, then the alt/az is all you will ever need really need.

What you will run into is not being able to use focal reducers as most Dobs do not have enough in-focus travel without modifying the telescope.
Hence the refractor and SCT.

By the way the EQ mount is Orion's Sirius which has a 30 pound limit on telescope and is light enough to be portable.


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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: A good clear night. new [Re: Relativist]
      #6358801 - 02/06/14 12:05 AM

Quote:

Al, I'm new to video as well, but one thing I've learned by watching live video online is that f/ratio and especially focal length are very important to getting quick captures. A reducer can help a lot of course so you might want to consider that upfront. Every now and then I've seen people with big (20"+ dobs) broadcast successfully on alt/az mounts, so you'd be in good company.




This is very true. However for planetary work I have captured some great results with my 180mm MCT which is F15 and then using a 3X barlow at F45!.
I can get a lot of detail on a good transparent, stable and wind free night.


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