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Messier 57

M57 by Gerard van den Braak

Object data

Object type:

M 57 (NGC 6720)

Size:

11x15 arcmin.

Magnitude:

808

Constellation:

Lyra

Distance:

1.140 LY

 

 

Exposure data

Date, time

2008-06-10   ~00.30 hour

Julian day number

2454 627

Location:

Zuidlaren, Holland

Telescope:

Sugar-3 telescope 255mm f5 Newton

Camera:

ST 2000XM CFW10

Filters:

L: 110x3 sec

  R: 72x 3 sec
  G: 18x3 sec
  B: 18x3 sec

Temperature outside:

+190C

Temperature CCD:

-150C

Binning:

3x3

Processing tools:

CcdSoft, Photoshop CS3

Imaged by:

Gerard van den Braak

Notes: