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

First light with Optolong L-eXtream

  • Please log in to reply
4 replies to this topic

#1 bthrel

bthrel

    Ranger 4

  • *****
  • topic starter
  • Posts: 340
  • Joined: 02 May 2020
  • Loc: Linden TN

Posted 14 July 2021 - 08:44 AM

So found a deal on a Optolong L-eXtreme and despite the super high humidity and heavy dew was able to give it a run before the high clouds arrived and the dew drove me in. When I was doing my polar align, I initially thought something was wrong with my setup, but then realized that the filter required much higher gain and exposure to start seeing the polar region stars for alignment. Once I sorted that and darkness set in I started my EAA session ..Pretty happy with the results... Captures are as follows..

 

Common parameters to all shots

 

OTA: William Optics Zenithstar z73III APO with .8x reducer/flattener @ F4.7
Mount: Celestron AVX
Camera: ASI 294MC-PRO
Filter: Optolong L-eXtream
Capture: bin1 , gain 400,  Cooled to 10°C, RAW16, SC 4.0 saved as seen 
Darks
Guiding: PHD2,  4s exposures,  WO 50MM Guide Scope, ASI120MM-MINI. RA dithering
Light pollution:  Moon Phase Waxing Crescent/12.7%, Bortle 4
Weather: calm clear, good transparency
Seeing: average

 

Frames and times in file names
Eagle
Eagle Stack 7framesx15s  105s WithDisplayStretch
Cresent
Cresent Stack 10x30s frames 300s WithDisplayStretch
Pelican
Pelican Stack 10framesx30s  300s WithDisplayStretch
Trifid/lagoon
Stack 19framesx15s  285s WithDisplayStretch
Veil
Veil Stack 8framesx30s  240s WithDisplayStretch
West Veil
West Veil Stack 10framesx30s  300s WithDisplayStretch

 

 


  • Ptarmigan, Magellanico, Stargazer3236 and 7 others like this

#2 Clouzot

Clouzot

    Viking 1

  • -----
  • Posts: 518
  • Joined: 09 Jul 2018
  • Loc: French Riviera

Posted 15 July 2021 - 09:42 AM

I really like the fact that the filter is able to pull out more OIII (blue-green) than my L-Enhance. Oddly enough, it feels more balanced that way, at least on the two Veil nebula captures you posted (and the Crescent as well). The L-Enhance always ends up with too much Ha and reds all over the place.



#3 Sacred Heart

Sacred Heart

    Apollo

  • *****
  • Posts: 1,269
  • Joined: 16 Aug 2020

Posted 15 July 2021 - 11:37 AM

Those are nice captures.   Live stack allows you to see what you could not see through an eyepiece.   I like them.  What would happen if you tried to barlow  the smaller stuff??     Joe



#4 skaiser

skaiser

    Apollo

  • -----
  • Posts: 1,081
  • Joined: 16 Oct 2010
  • Loc: dallas Texas

Posted 15 July 2021 - 01:39 PM

Just curious 

exposure time and number 



#5 bthrel

bthrel

    Ranger 4

  • *****
  • topic starter
  • Posts: 340
  • Joined: 02 May 2020
  • Loc: Linden TN

Posted 15 July 2021 - 04:03 PM

Just curious 

exposure time and number 

Click on each photo and it will show the details on exposure and number of frames.




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