Tag: M99

M99 Galaxy

This beautiful spiral galaxy is listed under number 99 in Messier’s catalog. It can be visually located during the spring months in the southwest corner of the constellation Coma Berenices. The galaxy has several spiral arms, which are the product of the interaction with another galaxy. This interaction also induced very high angular velocity, which is the highest in Messier’s catalog. Specifically, the outer parts move with a velocity of 1200 km/s with respect to the center of the galaxy.

I dedicated two nights to this galaxy. The telescope was collecting two whole nights the light traveling 45 million light-years. In total, the picture is a stack of 130 single shots, each 3 minutes long.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-10°C
CorrectorMaxField coma corrector
Exposure130x180s, Gain 95, bin 1x1,

M98 M99 Galaxies

Messier 98 (left bottom) and 99 (right) are galaxies visually located in constellation Come Berenices. These galaxies interacted with each other long time ago, but it’s long time forgotten, because currently, the distance between them is 1.3 million light years.

Technical details:

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length630 mm
MountAvalon M-Zero
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-10°C
CorrectorExplore Scientific HR
FiltersAstronomik L-1 - UV IR Block Filter
Exposure140x180s, Gain 94, bin 1x1,