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kwad
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Reged: 08/11/09

Loc: Northern Virginia
Re: AP Images Taken with Original NexStar new [Re: Peter9]
      #5147404 - 03/29/12 03:26 PM

Hi Peter,

Thanks for the compliment on the image. The camera and low jet stream turbulence contributed significantly to the clarity of the image.

Carl


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Jmel
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Reged: 01/24/12

Loc: Eastern North Carolina
Re: AP Images Taken with Original NexStar new [Re: kwad]
      #5148170 - 03/30/12 01:53 AM

Mars via backyardeos...


MARS_200iso_1'3_768x792_20120329-22h40m24s494-3 by J-mel, on Flickr


MARS_200iso_1'6_768x792_20120329-22h47m34s5502-2 by J-mel, on Flickr

Took another processing shot at it:


test4 by J-mel, on Flickr

Edited by Jmel (03/30/12 03:00 PM)


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Midnight Dan
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Reged: 01/23/08

Loc: Hilton, NY, Yellow Zone (Bortl...
Re: AP Images Taken with Original NexStar new [Re: Jmel]
      #5148332 - 03/30/12 07:35 AM

Good job on Mars, Jmel! What's the difference between the two images?

-Dan


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Jmel
member


Reged: 01/24/12

Loc: Eastern North Carolina
Re: AP Images Taken with Original NexStar new [Re: Midnight Dan]
      #5148414 - 03/30/12 09:06 AM

Same source, just a difference in the processing I did in photoshop. The top one is a bit more processed, more wavelets, etc. The bottom one is a bit more natural. I really dig the images I see with the 6se, so I hope to get something closer to that some day with my 5se.

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haytor
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Reged: 11/29/07

Loc: Smethwick near Birmingham UK.
Re: AP Images Taken with Original NexStar new [Re: Jmel]
      #5148418 - 03/30/12 09:10 AM

Quite agree with you Jmel, the lower image looks a lot more natural.Nice job

regards,

Tom.


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Jmel
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Reged: 01/24/12

Loc: Eastern North Carolina
Re: AP Images Taken with Original NexStar new [Re: haytor]
      #5148497 - 03/30/12 10:12 AM

Apparently I was wrong about the source, they are separated by a few minutes...

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Maverick199
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Reged: 02/27/11

Loc: India
Re: AP Images Taken with Original NexStar new [Re: Jmel]
      #5149047 - 03/30/12 04:09 PM Attachment (33 downloads)

Hi Carl and Jmel, great images.

Tried Neximage today with C6 and obtained some sharp images with GSO 0.5X focal reducer combined with Barlow.

Here's Saturn first.


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Maverick199
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Reged: 02/27/11

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Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5149050 - 03/30/12 04:10 PM Attachment (24 downloads)

Another look at Saturn ( original orientation ).

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Jmel
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Reged: 01/24/12

Loc: Eastern North Carolina
Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5149077 - 03/30/12 04:32 PM

Quote:

Hi Carl and Jmel, great images.

Tried Neximage today with C6 and obtained some sharp images with GSO 0.5X focal reducer combined with Barlow.

Here's Saturn first.




Doesn't the focal reducer cancel out the barlow? I've done some of those shots by accident... Looks good, but I bet if you pulled the focal reducer out it would look better!


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Midnight Dan
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Reged: 01/23/08

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Re: AP Images Taken with Original NexStar new [Re: Jmel]
      #5149309 - 03/30/12 07:33 PM

Jmel is correct. The barlow multiplies the focal length by a factor of two, and the focal reducer divides the focal length by a factor of 2. You're right back where you started. You should see the same image scale if you remove both of them, but you will have more light throughput and a bit more contrast.

-Dan


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Maverick199
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Reged: 02/27/11

Loc: India
Re: AP Images Taken with Original NexStar new [Re: Midnight Dan]
      #5149620 - 03/31/12 01:24 AM

Hi Jmel and Dan. Yes both of your are correct, but for some reason, using this FR seems to produce sharp results. I tried without too earlier. Next time I will try with only a Barlow.

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Tel
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Reged: 03/31/06

Loc: Wallingford England
Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5150211 - 03/31/12 01:37 PM

Hi Guys,

Further to that which has been mentioned on the subject: just perhaps an additional note of possible interest on the use of Barlow lenses which probably also applies to EP screw-on reducers of the X0.5 type Haseeb has used.

While I'm completely ignorant of the exact optical physics involved, the focal length increase/decrease produced as a result of the use of either; varies according to their position in the optic train.

In other words, if either is attached, (as normal ?), directly to an EP or, alternatively, placed before the diagonal; despite their nominal branding as, say, a X2 Barlow or a X0.5 reducer, the resultant magnification/FOV will be comparatively different.

Anyone care to try this and report ?

Best regards,
Tel


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Maverick199
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Reged: 02/27/11

Loc: India
Re: AP Images Taken with Original NexStar new [Re: Tel]
      #5151174 - 04/01/12 05:52 AM Attachment (24 downloads)

Actually you have a point there Tel. I remember taking an image with only the Neximage inserted ( minus 0.5X ) and the Planet for some reason appeared smaller than the one I took with 0.5X.

Btw, I took a 11ms exposure on M 13 heeding Tel and other's advice to go with suitable focal lenghts on certain objects. At 1500mm, I couldn't go past 25 seconds without star trails, so I grabbed 40 quick images and got this.

I also took M 57 at 25 secs x 18 with C6.

Hope you like it.


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Maverick199
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Reged: 02/27/11

Loc: India
Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5151176 - 04/01/12 05:53 AM Attachment (28 downloads)

M 57 Ring Nebula.

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Peter9
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Reged: 10/30/08

Loc: Yorkshire - Born & Bred
Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5151288 - 04/01/12 08:18 AM

Thats a great capture of M13 Haseeb. The individual stars stand out really well. Good contrast too, which helps bring out the best in this wonderful Globular.

Also a fine image of M57. Never tire of seing it.

Thanks for posting.


Regards. Peter.


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Maverick199
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Reged: 02/27/11

Loc: India
Re: AP Images Taken with Original NexStar new [Re: Peter9]
      #5152742 - 04/02/12 05:40 AM

Thanks Peter. Wonder if 1500mm F/L will allow me to shoot unguided for 30 seconds. My polar alignment was quite accurate that day but stars showed some trailing.

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Jmel
member


Reged: 01/24/12

Loc: Eastern North Carolina
Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5154093 - 04/03/12 01:21 AM

Saturn! 1000 frames, 937 stacked.


SATURN_400iso_1'_768x792_20120402-22h57m35s980 by J-mel, on Flickr


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Maverick199
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Reged: 02/27/11

Loc: India
Re: AP Images Taken with Original NexStar new [Re: Jmel]
      #5154171 - 04/03/12 05:31 AM

Great effort, like the tilt and colors.

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Tel
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Reged: 03/31/06

Loc: Wallingford England
Re: AP Images Taken with Original NexStar new [Re: Maverick199]
      #5154201 - 04/03/12 06:38 AM Attachment (17 downloads)

Hi Jmel,

A very nice capture with a clear Cassini Division !

I had much less success trying to image Saturn the other evening due to it being very low down at my latitude so I took the liberty at looking a little further into yours. It appears as if you might have captured a storm in the lower hemisphere as evidenced, (I think), by that small white area.

Hope you don't mind,

Best regards,
Tel

Edited by Tel (04/03/12 06:43 AM)


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Jmel
member


Reged: 01/24/12

Loc: Eastern North Carolina
Re: AP Images Taken with Original NexStar new [Re: Tel]
      #5154466 - 04/03/12 10:35 AM

Thanks Tel! I don't mind at all. I'd in fact, love to upload my avi to my website and have some real professionals show me what might be possible with my content. Sometimes I spend hours on processing and I feel like even more details could come out if I knew more tricks of the trade!

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