Archive for August 2017

Remembering Comet Hale-Bopp – March 1997 – Charcoal Sketch and Photograph

August 14, 2017

A pleasant memory and a fast 20 years.  

Comet Hale-Bopp
March 1997
10-Inch Reflector
Magnification: 160x
FOV: 0.38º

White charcoal pencil sketch on black card stock.  The anti-tail, gas and dust tails are clearly visible.   

 
Image
   

Image by Mario Motta of Massachusetts.  

Nikon camera at F2, 50mm lens if I recall….piggybacked on my telescope just before dawn, with FILM  kodachrome. (what is that stuff again?)

I scanned it to digitize a few years back.  Mario Motta 

 
Hale-Bopp

Globular Cluster Messier 14 – July 2017 Observer’s Challenge Report

August 8, 2017

JULY 2017 OBSERVERS CHALLENGE – M-014

In 10-inch reflector, M14 is a large cluster, mostly round, but with a slight elongation, oriented northeast-southwest.

At 160x very few stars can be resolved, but only with averted vision. The surface brightness is overall fairly low with a mostly even texture, but with a subtle brightening in the central region. The edges fade very gradually outwards.

M14 at magnitude 7.6 is quite a bit fainter than globulars M10 and M12, also located in Ophiuchus.

In 3.5-inch Maksutov-Cassegrain the cluster is mostly round with a faint brighter concentrated middle. No resolve of stars.

Roger Ivester

Pencil Sketch: 

FullSizeRender

Inverted colors via computer:

Rogers M-014 Inverted

 

August 2017 Total Eclipse Information and Tips

August 7, 2017

http://www.astronomy.com/2017eclipse