Category Archives: Nebulae

Thor’s Helmet

284×30 sec or 142 minutes from a Bortle 7-8 metro zone, an L-eNhance filter, a QHY183c at -20C cooling and a TV-85 at F/5.6.

“Thor’s Helmet,” aka NGC 2359. First time I ever shot this with any camera. For years I’ve passed this guy up for bigger or better objects nearby, but not on this night. It was a main goal for this night’s imaging session. It did not get high enough to image until 2:00 am here and I took a nap as soon as I started it going. Luckily, I got enough data before sunrise to make a half-decent final image

UPDATE  Nov 13, 2020:
More time added with 30×120 sec sub-images at Gain 20, offset 200 to the above.  Total time 3 hrs, 22 min.

Thor’s Helmet – 30×120 sec and 284×30 sec from a Bortle 7-8 metro zone, an L-eNhance filter, a QHY183c at -20C cooling and a TV-85 at F/5.6.

Horse Head and Flame Nebula in Full Moon Conditions

B33 and Flame Nebula – 262×30 sec sub-images LiveStacked in Sharpcap 3.2. Gain 37 (1-54 scale,) Offset 200, QHY183c at -20C, Optolong L-eNhance filter, Televue TV-85 at F/5.6.

I was killing time while waiting for Thor’s Helmet to get into position, so I shot the Horsehead and Flame Nebula region.  I used Fitsworks to crop out the dithering artifacts and set a black point and do the initial color balance. Photoshop and some hue and saturation adjustments to finish it off. Then, one pass with color blotch action and one horizontal banding removal action later and this is how it came out.  A few other tweaks were done, too. Not too bad for the minimal effort and a full moon night.

The Helix Nebula on Oct 11, 2020

he Helix Nebula on Oct 11, 2020
116 minutes in 15 sec sub-images (464×15.) QHY183c at -15C, Gain 37, Offset 200, L-eNhance filter, Televue TV-85 at F/5.6, SharpCap 3.2 LiveStacking with dark subtraction and dithering.

Taken from a metro area, Bortle 7-8 zone, the day after Hurricane Delta. Above average transparency and average seeing.

The Butterfly Nebula

The Butterfly Nebula on Oct 2, 2020. 247×15 sec, Gain 37, Offset 200, QHY183c at -15C, L-eNhance filter, Televue TV-85 at F/5.6.

For a night with a full moon, this came out pretty good.  Good transparency helped.  Minimal processing with only color balance and saturation/hue adjustment tricks were used.

M16 – The Eagle Nebula

M16 – The Eagle Nebula on Oct 2, 2020. 40 minutes in 160×15 sec sub-images, TV-85 at F5.6, L-eNhance filter, QHY183c at -15C, Gain 37, Offset 200.
M16 – The Eagle Nebula on Oct 2, 2020. 40 minutes in 160×15 sec sub-images, TV-85 at F5.6, L-eNhance filter, QHY183c at -15C, Gain 37, Offset 200. Cropped.

I shot this while waiting for the Moon and Mars to get higher in the sky on Friday, Oct 2nd, 2020.   After shooting some moonrise shots, I turned the scope to this and got 40 minutes of sub-images before it went behind a tree.

It was also the first time I imaged using a generator for power and a battery backup unit to keep the scope running if I ran out of gas and had to refill the tank.  I got a great deal on the generator that I could not pass up.   It will work better in the field with my current imaging setup than the battery system I had before.

Trifid Nebula, M20 in 16 Minutes

Trifid Nebula, M20 on Aug 21, 2020. 65×15 sec, Gain 30, Offset 218, Optolong L-eNhance filter, QHY183c at -10C, Televue TV-85 at F/5.6.

Here’s a very short run I did on the Trifid Nebula.  An extra short quickie with only minimal processing.  I was interrupted by a couple of young gents who saw me imaging in the front parking lot and wanted to see what I was up to.   They also wanted to see Jupiter, so I obliged.  By the time I got back to the Trifid, it was already about to go behind a tree.  Oh, well…

I am hoping to get this object with about an hour of exposure at least, if not more.  To that end, I added what I had taken before with my SN8 and Canon XT camera to see how it might look.  The additional data was 54 minutes of 3 min ISO 800 subs.  It is about a half-n-half blend:

Combined data from SN8 scope and Televue TV-85 scopes, about 70 minutes total.

M8, The Lagoon Nebula on Aug 21, 2020

M8, the Lagoon Nebula on Aug 21, 2020. 240×15 sec, Gain 30, Offset 218 QHY183c at -10C, Optolong L-eNhance filter, Televue TV-85 at F/5.6.

I had been wanting to get some data on this one for quite some time.  Finally, a clear night with no big commitments the next work day came along on Thursday evening, Aug 20, 2020 and I got my chance.

I setup my rig in the front parking lot of the place where I stay at instead of the usual back alleyway.  It was the only place to get a clear view without trees and street light glare interfering.

I used the Optolong L-eNhance filter, which works really well for this object.   I did an hour’s worth of exposure, which was enough to tamp down the noise enough for a decent final image.  It could use more and I might add to it later if I get the chance.