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

Sketching some double stars under a pristine sky (La Palma)

This topic has been archived. This means that you cannot reply to this topic.
8 replies to this topic

#1 cloudbuster

cloudbuster

    Apollo

  • *****
  • topic starter
  • Posts: 1,096
  • Joined: 02 Feb 2016

Posted 11 April 2019 - 04:52 AM

I have just returned from a week of observing on the lovely island of La Palma (Spain). Mainly for deep sky, but since the seeing on the top of mountain is well known for its quality, I could not resist to observe at least SOME double stars as well smile.png. Here's my catch.

 

First one up was Porrima on the very first day I arrived. The observation was done in the garden next to the house, where the seeing is less (but still adequate) and the darkness still reaches a comfortable 21.6 mpsas. Porrima was easily split, with both stars (evenly) bright. The colors were perceived as white, although the A component may have appeared a bit yellowish.

 

 

Porrima.jpg

 

 

Four days later I made the trip to the top of the Roque de los Muchachos at a height of 2400+ mtrs when the wind calmed a bit and there was no risk of high clouds. I set up my telescope with perfect view on the southern horizon. The seeing was very good and darkness reached 21.8 mpsas.

 

 

IMG_6174.JPG

 

 

Still in twilight I started observing Sirius and was hoping to spot the pup as well. I was not disappointed... Sirius was a marvellous sight, not at all the same as the way I'm used to viewing it in my home country. A beautiful, bright, white light accompanied by a very tiny speck of light on the east side, much weaker than I expected, but continuously visible.

 

 

Sirius.jpg



#2 cloudbuster

cloudbuster

    Apollo

  • *****
  • topic starter
  • Posts: 1,096
  • Joined: 02 Feb 2016

Posted 11 April 2019 - 05:07 AM

The next day I went to the top again for an allnighter and the sky/weather conditions were a copy of the previous day. I first looked at Gamma Velorum, selected not because it's tough, but for the sheer beauty of it (pls forgive me smile.png). The main component is a very bright blue-white (Wolf–Rayet) star, very neat even at low altitude, accompanied by a white/light-yellow star some 2.4 mag dimmer. A lot more stars were visible in the same field, enhancing the beauty even more.

 

 

Gamma Velorum.jpg

 

 

Later that night I observed Izar, which was gorgeous. I used a higher magnification, which created a bit more "noise", but the image was improved as a whole. Izar is a very bright yellow/golden star, while the companion is quite a bit weaker (but still bright) and showed a pale blue color. The two were split comfortably and it was by far the best view I ever had on this pair.

 

 

Izar.jpg

 

 

Regards, Martijn


Edited by cloudbuster, 11 April 2019 - 05:27 AM.


#3 Asbytec

Asbytec

    Guy in a furry hat

  • *****
  • Posts: 22,219
  • Joined: 08 Aug 2007

Posted 11 April 2019 - 07:04 AM

Pristine skies above the clouds, pristine sketches as a result. So nice, Martijn. So nice...



#4 flt158

flt158

    Soyuz

  • *****
  • Posts: 3,755
  • Joined: 11 Aug 2014

Posted 11 April 2019 - 08:01 AM

Sensational sketches, Martijn!

 

We all love Porrima and Izar on this section of Cloudy Nights. 

Although Sirius is so tough for some of us.

But that is truly a brilliant sketch of the Pup. 

 

Thank you for letting us see=each of these doubles, including Gamma Velorum.

And your colours are spot on! 

 

Kind regards from Aubrey. 



#5 MP173

MP173

    Apollo

  • *****
  • Posts: 1,410
  • Joined: 30 Oct 2015

Posted 11 April 2019 - 10:09 AM

Outstanding sketches.  

 

Ed



#6 mikerepp

mikerepp

    Vanguard

  • -----
  • Posts: 2,234
  • Joined: 04 Aug 2014

Posted 18 April 2019 - 07:17 AM

Very nice sketches!  Being above those clouds must be a real exciting experience to have all that open sky.



#7 Bonco2

Bonco2

    Viking 1

  • *****
  • Posts: 867
  • Joined: 01 Jun 2013

Posted 18 April 2019 - 03:43 PM

Love your sketches. They were so good that without labels I think I could identify each one because they look so much like the view from the eyepiece.
Bill

#8 Chirp1

Chirp1

    Ranger 4

  • -----
  • Posts: 342
  • Joined: 12 Aug 2016

Posted 18 April 2019 - 03:48 PM

I have fond memories of my trip there in
1983. Even though it was aboard an aircraft carrier. Beautiful

#9 dUbeni

dUbeni

    Viking 1

  • *****
  • Posts: 977
  • Joined: 12 Apr 2010

Posted 19 April 2019 - 06:51 PM

Gorgeous sketches Martijn bow.gif waytogo.gif, I think you gave the first true insight of the Pup lol.gif

 

CS

Bernardo




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