Previous   To mainpage  Messier   Next

Messier 91

M91 by Gerard van den Braak Messier

Object data

Object type:

M91 (NGC 4548)

Size:

5.4'x 4.3'

Magnitude:

10.1

Constellation:

Coma berenices

Distance:

55 .10^6 LY

 

 

Exposure data

Date, time

2011-04-13  ~03.00 hour

Julian day number

2455 664

Location:

Zuidlaren, Holland

Telescope:

Takahashi FSQ-106ED + exender-Q 1,6x

Camera:

Canon 350D (mod)

Filters:

L: 1x300 + 5x180  + 5x120 sec

R: -
  G: -
  B: -

Temperature outside:

4,3 Celcius

Temperature CCD:

-

Binning:

-

SQM  19.91
Field of view 89' x 57'

Processing tools:

IP,CS3, GradX

Imaged by:

Gerard van den Braak

Notes:

moon 67%