M88_LRGB_16-04-2021

This is a LRGB image of M88/NGC4501 Galaxy. Again this is a small object and requires a longer focal length than the F7 of my scope but saying that I’m pleasantly surprised at the amount of detail I manage to pick out. This was going to be taken using my new 0.8 TeleVue focal reducer and include Galaxy M91 but I’m currently waiting for an adjustable spacer.

 

Information:-

M88 is an Sbc spiral galaxy approximately 50 - 60 million light-years away with a visual mag of 10.4 and apparent size of 6.9’x 3.7’ and is one of fifteen Messier objects that belong to the Virgo Cluster of galaxy’s. M88 can be found in the constellation of Coma Berenices.

 

 

EQUIPMENT:-

Telescope Meade 6000 115mm and AZ-EQ6 GT

ZWO ASI1600mm-Cooled camera

Orion Mini Auto Guide

ZWO L,R,G,B Filters

HoTech SCA Field Flattener

Chip Temp Cooled to -20 degC

 

IMAGING DETAILS:-

M88/NGC 4501 Galaxy (Coma Berenices)

Gain 139 (Unit Gain)

30 Lum subs@120sec (1h 0min)

20 Red subs@180sec (1h 0min)

20Green subs@180sec (1h 0min)

17 Blue subs@180sec (51 min)

Total imaging Time 3h 51min

Dithering

20 Darks

25 Flats

 

PROCESSING/GUIDING SOFTWARE:-

APT "Astro Photograph Tools"

DSS

PS CS2

Done