Light Pollution
Home Site Considerations Location Maps Meteorology Views From Site Frequently Asked Questions Contacts & Links
 
 

                              The Pinwheel Galaxy M101                               

 

 

Click here or on the image for a half resolution view 2023 x 1517 pixels, ~ 2.6 MB.

 

Image Information

Object

M101 UMa The Pinwheel Galaxy
Coordinates RA: 14 03 12.5  Dec: +54 20 55  PA: 355
Imaging by Greg Morgan
Date(s) June 8-10, 2008

Optics

RCOS 12.5 inch f/9 Ritchey-Chrétien with a 2,857mm focal length

Mount

Paramount ME

Camera

Apogee Alta U16M, 9 micron 4098 x 4098 pixels

Guiding

Off-axis with the Astrodon Monster MOAG and SBIG ST-402XM

Field Scale

0.64 arcseconds / pixel

FOV

32' x 43' N is up, E is to the left.

Chip Temp

-15 C

Filter(s)

Astrodon LRGB

Location

Sierra Remote Observatories, Shaver Lake California 4,610 feet

Exposure(s)

L 6 x 1800 , R 6 x 1800, G 4 x 1800, B 4 x 1800 seconds (10 Hours Total)

Binning

1x1

Camera control

MaxIm DL 4 / CCDAutopilot 3

Processing software

CCDStack, Photoshop CS2

Image notes

 LRGB only, no Ha data.

 

H II regions: bright knots or star forming regions within the spiral arms.

    

NGC 5462                                                                                                                       NGC 5461

 

    

          NGC 5455                                                                                                             NGC 5450 and 5457

 

Hit Counter
© 2006/7/8 Sierra Remote Observatories. All rights reserved.
www.sierra-remote.com
www.sierraremoteobservatories.com