Showing posts with label NGC 4501. Show all posts
Showing posts with label NGC 4501. Show all posts

Wednesday, 19 April 2023

M88 & M91

It has been a very windy day today, bright and clear but very windy, I wasn't hopeful looking at the weather app today for anything useful tonight. However image capture started at around 21.15 tonight with just a little wind and possibly the odd swirl inside the dome as guiding tonight is around and just under 1.00 arc second, happy with that of course but higher than the usual numbers. Looking at the subs appear every 5 minutes on the tablet, each one battered with satellites. At least I don't have to bin the subs anymore I wouldn't have anything after the first hour.

3 Hour RGB integration


Annotated


Inverted



M88 Crop 24 by 17 arc minutes


M88 Inverted

M91 Crop 19 by 18 arc minutes

M91 Inverted


NGC 4571 Crop 15 by 13 arc minutes

  • Total Exposure:  3 Hours, 12 x 5 Minutes RGB Filters per filter
  • Telescope: Altair Astro EDT130 Triplet.
  • Image Acquisition: ZWO ASIair Pro
  • Camera Settings:  ZWO ASI2600mm pro Gain 100, 0°C
  • Accessories: ZWO 7 position Filter wheel
    •                Optolong Broadband filters 
    •                ZWO EAF
  • Calibration Frames: Darks, Flats calibrated.
  • Stacking and Processing: Pixinsight & touch ups in Photoshop. 
  • Size:   1d 47' 22.2" x 1d 11' 18.0"
  • Pixel Scale: 1.046 arcsec/pixel



Saturday, 29 March 2014

M88

Between 50 to 60 million light years away lies M88 a member of the virgo cluster of galaxies. An Sbc galaxy inclined by 64 degrees to our line of sight. My 3 hour 20 minute image shows some nice structure in some tightly wound spiral arms.
 



 
A dozen plus more Ngc & Ic galaxies have been captured here down to 16th mag.

Comet Tsuchinshan-ATLAS, C/2023 A3 , Comet A3,

  A cosmic wanderer, Comet Tsuchinshan-Atlas or more commonly known as Comet A3 has traced its elliptical path through the solar system, a j...