Otto Struve 525

| 2 Comments


October 17, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.

Observation Notes:

This pair exhibited beautiful color at low power. The brighter southern star was yellow-orange, while the norther was blue. It was a nice contrast. I guessed a separation of 75"--it's actually 45". Man I need to work on that. The position angle in the sketch of approximately 350° matches the AL list measurement on the dot. The faintest star I plotted in the sketch was mag 12.7 GSC 0264701827.

SubjectDouble/Multiple Star: Otto Struve 525
ClassificationMultiple Star
PositionLyra [RA: 18:54:54 / Dec: +33:58]*
Separation*45"
Magnitudes*6.0, 7.7
Position Angle*350°
Date/Time07/30/05 - 12:50 AM
Observing Loc.Flagstaff, AZ - Home
InstrumentOrion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag.10 mm + 2X Barlow (240X)
ConditionsPartly cloudy, breezy
Seeing2-3/10
TransparencyNELM Mag 5.2

*Based on published data.

2 Comments

I just found your entry after viewing this beautiful binary last night with my Meade 8" LX200. I'm checking off the Astroleague Double Star Observing Club 100, having observed 40 so far.
Thanks for this post, as it confirms the observation I made myself.

Hi Steve, I'm glad the observation was helpful. It's one of my earlier observations and I wasn't as detailed with my PA and Separation estimates, so it's good to know that it compared well with what you saw. I hope you enjoy the rest of the AL Double Star list.

Leave a comment

You do not need to sign in or register to leave a comment.


The Cerulean Arc

My weblog for
everything else non-astronomy

Pin at will!


(Thanks for maintaining
return links.)

About this Entry

This page contains a single entry by Jeremy Perez published on July 30, 2005 12:50 AM.

Added M16, Mars and Neptune was the previous entry in this blog.

Messier 75 is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.

Categories

Monthly Archives

Powered by Movable Type 4.23-en