Celestial hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  HD108577  ·  HD108593  ·  HD108614  ·  HD108915  ·  IC 3303  ·  IC 3349  ·  IC 3355  ·  IC 3363  ·  IC 3382  ·  IC 3388  ·  IC 3393  ·  IC 3432  ·  IC 3442  ·  IC 3443  ·  IC 3457  ·  IC 3459  ·  IC 3475  ·  IC 3476  ·  IC 3478  ·  IC 3489  ·  IC 3492  ·  IC 3500  ·  IC 3501  ·  IC 3520  ·  IC 3540  ·  IC 3583  ·  IC 794  ·  M 84  ·  M 86  ·  M 87  ·  And 28 more.
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Markarian Mosaic, Don Ogaard
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Markarian Mosaic

Equipment

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Acquisition details

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Description

Highly variable "seeing" conditions for the four imaging sessions made this mosaic difficult to assemble. I did the best I could to match the histograms of the four panels but the results are still far from perfect. Star Alignment would only work on the upper two panels; it wanted nothing to do with the bottom two - I didn't overlap the panels enough, or there were too few stars visible due to poor conditions, or a combination of the two. I had to align and merge them manually in PaintShop.

So, not a great image, but a good learning experience in mosaic construction, and a chance to practice with some new gear.

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Sky plot

Sky plot

Histogram

Markarian Mosaic, Don Ogaard