Some double/multiple stars

[RichardJ]

What to image on a clear, moonlit night?
Thought I would have a go at some double stars.

15cm NexstarSE and ZWO 120MC camera.

RichardJ :)

[Saturnine]

Interesting work you've done there Richard. I'll stick my neck out and make an educated guess at what you've imaged.
Frame 1 - Alpha Crucis
Frame 2 - Beta Monoceros
Frame 3 - Castor
Frame 4 - Rigel

Have imaged Alpha Centauri and Alpha Crucis with my old webcam and 180 Mak a few years ago, just for fun and to see what would be possible.
Should maybe do some more with the newer camera with it's increased sensitivity.

[Merlin66]

Richard,
Well done.
The next step is to get a copy of Reduc from: florent_losse@yahoo.fr
This allows you to measure double stars...
http://astrosurf.com/hfosaf/

Highly recommended.

[RichardJ]

Hi Jeff,

Very close. Not Castor but Gamma Velorum. In my browser the file name of the object is at the bottom of the image. Had a go at Sirius but have not been able to confidently see the Pup with the Nexstar 15cm. Would also like to try some of the more colourful pairs.

RichardJ :)

[Saturnine]

So 3 out of 4 was ok then, should have known it wasn't Castor as the stars are too blue / white . Your scope seems to be well collimated judging by the diffraction rings .

[RichardJ]

Hi Jeff,

The scope is very well collimated. Don at Bintel did it for me.

RichardJ :)