HR 1370 January 5, 2013
Posted 06 January 2013 - 08:42 AM
I observed from about 8:45pm to 11:00pm, and tried a magnification range from 133x to 480x. My 5mm Zhumell Planetary eyepiece at 240x hit the sweet spot, giving me a good balance of image size, clarity and sharpness, and speed the star crossed my field of view. At 133x it wasn't enough for a split, although I could tell I was looking at a double, and at 480x I was getting a soft image. The usable range was 160x to 400x.
The color of the primary star was a beautiful orange/red, the secondary star appearing a darker bluish teal color. There were a couple of challenges to observing this double. First, the secondary star was positioned where the diffraction ring appeared, often making the secondary disappear from view. Second was a diffuse glare that was beaming from Jupiter, necessitating careful positioning of the star image to keep it out of the glare. No one said it was easy.
This is really a very nice double to observe. I hadn't observed doubles for almost two years and this was a lot of fun that reminded me what it is I like about doubles. Maybe between Jupiter and Saturn I'll turn my attention to these beauties I have been neglecting.
Thanks for looking,
Posted 06 January 2013 - 09:52 AM
Great observation! Sweet double.
Posted 06 January 2013 - 10:43 AM
Months ago I think already about sketching this kind of observation. Thanks to share, that will push us to try.
Posted 07 January 2013 - 10:42 PM
Well done, your sketch at such high power looks great.
Posted 08 January 2013 - 10:47 AM
Posted 08 January 2013 - 11:23 AM
Posted 08 January 2013 - 01:21 PM