Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Pacman Nebula SHO - CDK12 - Reducer

  • Please log in to reply
13 replies to this topic

#1 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 14 October 2021 - 11:28 AM

Imaging telescopes or lenses: Planewave CDK 12.5

Mounts: Astro-Physics AP1100 GTO CP4

Focal reducers: Planewave Instruments 0.66x Reducer

Software: NINA - Nighttime Imaging ‘N’ Astronomy  ·  PixInsight 1.8.6 Ripley Pixinsight 1.8

Filters: Chroma 3nm Sii  ·  Chroma 3nm H⍺

Dates:Sept. 24, 2021 ,  Oct. 8, 2021

 

Frames:
Chroma 3nm H⍺: 83x300" (6h 55')
Chroma 3nm OIII: 49x300" (4h 5')
Chroma 3nm Sii: 46x300" (3h 50')

Integration: 14h 50'

 

Bortle Dark-Sky Scale: 6.00

 

Pixel scale: 0.710 arcsec/pixel

 

 

Link:

https://astrob.in/lfjyvh/F/

Attached Thumbnails

  • PACMAN SHO CN - Copy.jpg

Edited by Rouzbeh, 14 October 2021 - 11:28 AM.

  • Jim Thommes, StephenW, Alterf and 24 others like this

#2 Jim Thommes

Jim Thommes

    Fly Me to the Moon

  • *****
  • Posts: 6,303
  • Joined: 20 Sep 2004
  • Loc: San DiegoCA USA

Posted 14 October 2021 - 07:12 PM

Cool image! Well done.



#3 rgsalinger

rgsalinger

    Cosmos

  • *****
  • Moderators
  • Posts: 9,556
  • Joined: 19 Feb 2007
  • Loc: Carlsbad Ca

Posted 14 October 2021 - 07:14 PM

Great shot. What was the guiding system that you used? 

Rgrds-Ross



#4 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 14 October 2021 - 09:10 PM

Cool image! Well done.

Thanks Jim, glad you liked it.



#5 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 14 October 2021 - 09:11 PM

Great shot. What was the guiding system that you used? 

Rgrds-Ross

Was all unguided.

 

I'm using the AP1100 CP4 without encoders and a fresh PEC curve.

 

Also, a high res Dec arc model near my regoein of interest.


  • rockstarbill likes this

#6 Mert

Mert

    Cosmos

  • *****
  • Posts: 8,366
  • Joined: 31 Aug 2005
  • Loc: Spain, Pamplona

Posted 15 October 2021 - 10:10 AM

Great resolution and colors. I like these little Bok globules floating in front.
Gives the image a strong 3D effect

Edited by Mert, 15 October 2021 - 10:11 AM.

  • Rouzbeh likes this

#7 rgsalinger

rgsalinger

    Cosmos

  • *****
  • Moderators
  • Posts: 9,556
  • Joined: 19 Feb 2007
  • Loc: Carlsbad Ca

Posted 15 October 2021 - 11:25 AM

In the full res versions were you completely happy with the stars? It's hard to tell how good they are in the version posted.

It's a great shot either way and I'm tempted to try this myself.

Rgrds-Ross



#8 bernhardhubl

bernhardhubl

    Vendor - CCD-Guide

  • -----
  • Vendors
  • Posts: 131
  • Joined: 01 Oct 2010

Posted 15 October 2021 - 12:02 PM

Very nice details!

Excellent work!

 

best,

Bernhard



#9 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 15 October 2021 - 12:02 PM

Great resolution and colors. I like these little Bok globules floating in front.
Gives the image a strong 3D effect

Thanks Mert, yes quiet a lot happening in there. Fun when you zoom in and see the details.



#10 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 15 October 2021 - 12:14 PM

In the full res versions were you completely happy with the stars? It's hard to tell how good they are in the version posted.

It's a great shot either way and I'm tempted to try this myself.

Rgrds-Ross

Thanks Ross, did you click on the link? Thats resampled at 65% to 0.71 arc"/pixel.

It was shot at 0.46"/pixel that i felt was a bit much.

 

 

Here is the Full res core:

 

https://astrob.in/o5rq6g/0/


  • R Botero likes this

#11 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 15 October 2021 - 12:15 PM

Very nice details!

Excellent work!

 

best,

Bernhard

Thanks Bernhard,

 

Nice work with CCD guide!



#12 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 15 October 2021 - 12:37 PM

I cant post the full res high quality here, it shrinks the file down to 80KB

 

Attached Thumbnails

  • PACMAN SHO core Full Res CN.jpg


#13 rgsalinger

rgsalinger

    Cosmos

  • *****
  • Moderators
  • Posts: 9,556
  • Joined: 19 Feb 2007
  • Loc: Carlsbad Ca

Posted 15 October 2021 - 01:02 PM

Thanks Rouz.

 

I'm trying to decide if I want to install the reducer that I bought, tighten up my polar aligment and use ProTrack (mount modelling for Paramounts) and see if I can get similar results while waiting for the CDK 14. That will ride on my partners AP1100AE.  With that rig I'll give the OAG a try given the larger imaging circle of the 14.

 

I spoke to Bill Dean (who lives just up the road from me) about putting the OAG in front of a CDK12.5 and he told me that the stars looked like seagulls and he could not get the mount (unknown brand) to guide well. He thought the the 14 would work better. 

 

Anyway, you do terrific work. 

 

Rgrds-Ross



#14 Rouzbeh

Rouzbeh

    Apollo

  • *****
  • topic starter
  • Posts: 1,460
  • Joined: 28 Jun 2006
  • Loc: Canada

Posted 15 October 2021 - 04:37 PM

Thanks Rouz.

 

I'm trying to decide if I want to install the reducer that I bought, tighten up my polar aligment and use ProTrack (mount modelling for Paramounts) and see if I can get similar results while waiting for the CDK 14. That will ride on my partners AP1100AE.  With that rig I'll give the OAG a try given the larger imaging circle of the 14.

 

I spoke to Bill Dean (who lives just up the road from me) about putting the OAG in front of a CDK12.5 and he told me that the stars looked like seagulls and he could not get the mount (unknown brand) to guide well. He thought the the 14 would work better. 

 

Anyway, you do terrific work. 

 

Rgrds-Ross

Sure Ross, 

 

Yeah Bill wasn't too optimistic however the CDK14 doe have a much larger circle. Depending on your chip size, you can stick the prism in further into the light cone and PHD doesn't really need perfect stars to guide.

 

I did test with an OAG and the guide chip 135mm off axis and it could pick up stars with the DK12, stars were round. THe CDK14 will need to stick further out though.

 

I ordered the Sagitta and waiting for Jeff (Optec) to get back and discuss things with him too.

 

The AP1100AE should be able to run unguided, my non AE is getting 300s. The weak point is usually the focuser flex as the optics are pretty solid from what I can tell.


  • rockstarbill likes this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics