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

Astro Video Image Gallery

  • Please log in to reply
4213 replies to this topic

#4201 StarMike8SE

StarMike8SE

    Ranger 4

  • -----
  • Posts: 383
  • Joined: 26 Mar 2014
  • Loc: Florida

Posted 25 July 2016 - 12:20 PM

I have more to show from last night, just have not had time to convert them jpgs yet.  One of the best nights I have had in months



#4202 TL2101

TL2101

    Viking 1

  • -----
  • Posts: 990
  • Joined: 17 Sep 2010
  • Loc: Concord, CA

Posted 25 July 2016 - 12:24 PM

Joe which skyglow filter did you use with the h-a filter?

 

 

I use the 2" Orion SkyGlow SC RC Broadband filter along with the 1.25"  7nm Orion Extra Narrowband HA  Imaging filter on my C8. The SkyGlow filter came with my scope from the previous owner and is made in Japan. Not sure how old it is but the scope was made in the 80's.



#4203 TL2101

TL2101

    Viking 1

  • -----
  • Posts: 990
  • Joined: 17 Sep 2010
  • Loc: Concord, CA

Posted 25 July 2016 - 04:11 PM

Errol I am sure I have but can't find any examples in my picture folders. I don't keep very good notes if any at all. I have found 45 seconds for nebula's in Ha and 15 seconds for brighter objects like globs has been my sweet spot. I normally stack 4 to 5 frames. Occasionally I go to 60 seconds for the very faint objects.

 

Tonight I will try the Crescent in Ha stacking at 15 seconds and see how it compares. If you have a time you want me to use let me know and I will give it a try.

 

 

Here is the Crescent Nebula shot at 15 seconds and stacked 15 times. I get more detail in the 5 stack at 45 seconds from my earlier post.

Attached Files


Edited by TL2101, 25 July 2016 - 04:18 PM.

  • alphatripleplus, Susan H and Robrj like this

#4204 TL2101

TL2101

    Viking 1

  • -----
  • Posts: 990
  • Joined: 17 Sep 2010
  • Loc: Concord, CA

Posted 25 July 2016 - 04:16 PM

Shot Pickering's Triangle from my 50mm Orion guide scope with a Ha filter using darks with the Lodestar X2. Cropped to eliminate stretched stars on the left side of the image.

Attached Files


Edited by TL2101, Yesterday, 01:05 AM.

  • alphatripleplus, Susan H, santafe retiree and 2 others like this

#4205 alphatripleplus

alphatripleplus

    Mariner 2

  • *****
  • Posts: 258
  • Joined: 09 Mar 2012
  • Loc: Short Hills, New Jersey

Posted 25 July 2016 - 05:19 PM

Joe, Thanks for doing the test stacking 15sec vs 45sec subs of the Crescent - definitely more detail and fainter stars visible in the 45sec subs. Very interesting. 



#4206 StarMike8SE

StarMike8SE

    Ranger 4

  • -----
  • Posts: 383
  • Joined: 26 Mar 2014
  • Loc: Florida

Posted Yesterday, 08:39 AM

Here are a few more from Sunday night.   Eagle, Trfid, Lagoon, Swan nebula.   15 second exposures stacked for 4 minutes

Attached File  eaglehabw.jpg   85.49KB   3 downloadsAttached File  trifbw.jpg   105.04KB   1 downloadsAttached File  lagbw.jpg   80.83KB   2 downloadsAttached File  swanbw.jpg   118.9KB   1 downloads


  • DonBoy, CharlesC, TL2101 and 5 others like this

#4207 StarMike8SE

StarMike8SE

    Ranger 4

  • -----
  • Posts: 383
  • Joined: 26 Mar 2014
  • Loc: Florida

Posted Yesterday, 08:42 AM

I also tried some Ha.  Had to increase this to 20 second exposures

 

Attached File  laghabw.jpg   76.73KB   4 downloadsAttached File  trifhabw.jpg   78.2KB   3 downloadsAttached File  swanhabw.jpg   86.55KB   2 downloadsAttached File  eaglehabw.jpg   85.49KB   2 downloads


  • DonBoy, TL2101, alphatripleplus and 5 others like this

#4208 StarMike8SE

StarMike8SE

    Ranger 4

  • -----
  • Posts: 383
  • Joined: 26 Mar 2014
  • Loc: Florida

Posted Yesterday, 08:45 AM

Also got M82, The Ring, and the Dumbell

 

Attached File  ring.jpg   37.18KB   2 downloadsAttached File  Dumbell.jpg   130.93KB   3 downloadsAttached File  m92.jpg   57.53KB   2 downloads


  • DonBoy, TL2101, Don Rudny and 2 others like this

#4209 alphatripleplus

alphatripleplus

    Mariner 2

  • *****
  • Posts: 258
  • Joined: 09 Mar 2012
  • Loc: Short Hills, New Jersey

Posted Yesterday, 08:50 AM

Okay, after seeing Joe's great H-alpha shots, I tried using the ASI224 with a 7nm H-alpha filter and the C8. I know that with the ASI224's RGGB color matrix at 656nm, the overall response will be about 35% of that of a mono sensor  (ZWO gives relative responses at 656nm of: 95% for R, 19% for G, and 8% for B). So clearly this is not an efficient way to do H-alpha, but without a mono camera it's all I can do at the moment. Anyway, here is a 7 minute stack of 10sec subs of the Crescent. I didn't try longer subs, which might have been a good idea -  I will try that next time.

 

NGC6888 (42x10s):  ASI224 @350 gain + C8 @ f3.7 + 7nm H-alpha + SharpCap. Desaturated post SharpCap (too much red otherwise).

 

Attached File  NGC6888_Stack_42x10s_350G_Ha_f3.7_GI_crp.jpg   95.19KB   4 downloads


  • Robrj likes this

#4210 Astrojedi

Astrojedi

    Apollo

  • *****
  • Posts: 1136
  • Joined: 27 May 2015
  • Loc: San Diego, CA

Posted Yesterday, 12:04 PM

Some shots from last night using my club's Atik Infinity color camera. Set it up in my observatory on the 8" SCT. Getting ready for an outreach event this weekend that I am hosting in my backyard.

 

All images on a C8 @ F3.7, CGEM mount and DGM GCE filter (no guiding). Exposure times are in the image name. Typically 5s-30s sub exposures.

 

There are some aberrations around the corners due to the fast focal ratio but for outreach I prioritize speed (as long as the image of the main object stays enjoyable no one notices)

 

Attached File  M16 F3.7 5x30s GCE2.jpg   257.84KB   3 downloads


  • DonBoy, CharlesC, Don Rudny and 5 others like this

#4211 Astrojedi

Astrojedi

    Apollo

  • *****
  • Posts: 1136
  • Joined: 27 May 2015
  • Loc: San Diego, CA

Posted Yesterday, 12:07 PM

Details same as above

 

M8:

Attached File  M8 F3.7 5x30s GCE2.jpg   148.87KB   1 downloads

 

Open Cluster NGC6819 (also referred to as the Foxhead):

Attached File  N6819 Foxhead F3.7 9x10s GCE.jpg   180.87KB   2 downloads


  • DonBoy, Don Rudny, StarMike8SE and 2 others like this

#4212 Astrojedi

Astrojedi

    Apollo

  • *****
  • Posts: 1136
  • Joined: 27 May 2015
  • Loc: San Diego, CA

Posted Yesterday, 12:10 PM

Details same as above

 

Looking towards M24 Sagittarius Star Cloud. My FoV is too narrow to get the whole cloud but captured the very interesting open cluster NGC6603 (center left)

 

Attached File  M24 C8 f3.7 GCE 3x30s.jpg   325.37KB   2 downloads


  • DonBoy, geminijk, Robrj and 1 other like this

#4213 Astrojedi

Astrojedi

    Apollo

  • *****
  • Posts: 1136
  • Joined: 27 May 2015
  • Loc: San Diego, CA

Posted Yesterday, 12:14 PM

Same Details as above

 

And one of my favorite open clusters M11

 

Attached File  M11 C8 f3.7 GCE 2x5s.jpg   122.75KB   1 downloads

 

Open cluster M25. Love the color of the older stars.

 

Attached File  M25 C8 f3.7 GCE 3x5s.jpg   218.04KB   1 downloads

 


  • DonBoy, geminijk, Robrj and 1 other like this

#4214 Astrojedi

Astrojedi

    Apollo

  • *****
  • Posts: 1136
  • Joined: 27 May 2015
  • Loc: San Diego, CA

Posted Yesterday, 12:23 PM

Same details as above.

 

A couple of globs

 

M22

Attached File  M22 C8 f3.7 GCE 5x10s.jpg   153.96KB   2 downloads

 

M9

Attached File  M9 C8 f3.7 GCE 7x15s.jpg   117.04KB   1 downloads


  • DonBoy, StarMike8SE, Robrj and 1 other like 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.







Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics