Category Archives: Nebulae

Seestar S50 Image of The Crab Nebula

The Crab Nebula supernova remnant in Taurus. The Chinese, Mayans and others saw It when it blew up in the year 1054. It contains a pulsar (neutron star) at its center.

This was taken with a Seestar S50 Smart Telescope using 30 sec sub-images. It has about an hour of total integration time that finished up just after midnight last night (12:24 A.M., Dec 24, 2025.)
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Crab Nebula, Seestar S50, 60 minutes using 30 sec subs.

M78 Reflection Nebula in Orion – Dec 23, 2025

It was not the best night in terms of transparency, so I put a lot of time imaging this object thinking I could get past that with enough sub-images.   Unfortunately, 2.5 hrs was still not enough under those conditions.

I couldn’t boost this image the way I wanted since it was still pretty noisy.  Plus, my flat, which I have since replaced, was faulty with a green blotch on the mid-right side.  I think I’ll re-image this one now that I can better calibrate it with a new flat.

M78 Reflection Nebula in Orion. 2.5 hrs using 30 sec sub-images.

First Light With New Telescope – The Seestar S50

After waiting a while for the tech to mature, I decided that a Smart Telescope would be fun to play with.   So, I got the cheapest one on the market.

ZWO built it originally and they spun off a new company called Seestar to market it.    In this case, the unit is the Seestar S50, a 50mm triplet in an all-in-one design including mount, camera, computer and storage.

Here’s the first light images from it:

NGC 281
M 31
M 42
Moon
M 1
IC 434
M 78

March 11, 2024 – M42 Core Update

M42 Update - Core region, 20x30 sec added to previous 64x180 sec image.
M42 Update – Core region, 20×30 sec added to previous 64×180 sec image.

I was trying to get more data on 12P/Pons-Brooks, but it was too cloudy and the comet was too low.  So, I moved on to M42 and tried to get some shorter 30 second exposures that would not overexpose the core.   They were added into what I had from the last session in the image above.