Celestial hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  6 Com  ·  Coma Pinwheel  ·  IC 3065  ·  IC 3077  ·  IC 3080  ·  IC 3093  ·  IC 3094  ·  IC 3096  ·  IC 3142  ·  M 98  ·  M 99  ·  NGC 4186  ·  NGC 4192  ·  NGC 4208  ·  NGC 4212  ·  NGC 4237  ·  NGC 4254  ·  The star 6Com  ·  Virgo Cluster Pinwheel
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m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
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m98 and m99 - 2 nights unguided exposures

Getting plate-solving status, please wait...
m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
Powered byPixInsight

m98 and m99 - 2 nights unguided exposures

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Description

This image is the sum of the nights of 23rd and 24th of April. Taken with an unmodded NIkon d5300, a TS65F on top of a Ioptron CEM60EC (on top of an Orion 250 F 3.9)

Stacking an star elongation correction with AstroArt. Gradient reduction with Pixinsight (DBE)

Messier 98, also known as M98 or NGC 4192, is an intermediate spiral galaxy located about 44.4 million light-years away in the constellation Coma Berenices, about 6° to the east of the bright star Denebola.

Messier 98 is a member of the Virgo Cluster, which is a large, relatively nearby cluster of galaxies.[10] About 750 million years ago, Messier 98 may have interacted with the large spiral galaxy Messier 99. The two are now separated by a distance of 1,300,000 ly (400,000 pc).

Messier 99 or M99, also known as NGC 4254, is a grand design spiral galaxy in the northern constellation Coma Berenices approximately 15 megaparsecs (49 megalight-years) in distance from the Milky Way.

A bridge of neutral hydrogen gas links NGC 4254 with VIRGOHI21, an HI region and a possible dark galaxy. The gravity from the latter may have distorted M99 and drawn out the gas bridge, as the two galaxy-sized objects may have had a close encounter before they went their separate ways. However, VIRGOHI21 may instead be tidal debris from an interaction with the lenticular galaxy NGC 4262 some 280 million years ago. It is expected that the drawn out arm will relax to match the normal arm once the encounter is over. (Wikipedia)

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Revisions

  • m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
    Original
  • m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
    B
  • m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
    C
  • m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
    D
  • Final
    m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti
    E

B

Description: Adjusted background

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C

Description: V3 - level adjustment with PS

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D

Description: playing with Gimp and old images - curves adjustment - selective gaussian blur on background - local unsharp mask on galaxies

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E

Description: Astroart 8 - gradient removal, DDP, deconvultion, low pass, stretch

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m98 and m99 - 2 nights unguided exposures, Stefano Ciapetti

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