Category Archives: Nebulae

Jellyfish Nebula – IC 443

IC 443 on Feb 29, 2020 UT. 276×30 sec, Gain 37, Offset 15, QHY183c at -20C, UHC-S filter, Televue TV-85 at F/5.6.

First object of this night’s session was an ambitious attempt at the Jellyfish Nebula.  Over 2 hrs and it still was not enough.  I was hoping it would pick up more.  The L-eNhance filter might do a better job.   For nebulae, it is definitely more sensitive, just not as versatile as the UHC-S filter is.

Crab Nebula

Crab Nebula on Feb 22, 2020. 122×30 sec @ Gain 37, Offset 15, -20C, QHY183c, UHC-S filter, Televue TV-85 at F/5.6.

Just over an hour’s worth of exposure for this one.   This was the 2nd object of the night, the first being Betelgeuse, which was only a few frames.

I had better conditions for this shot at the beginning of the session than later in the night for other objects.   Too bad it didn’t stay like that.

While shooting this, two older ladies came by to see what I was doing.   Interesting conversation, but I think I went right over their heads trying to explain a supernova remnant.   LoL!  🙂

M78 Reflection Nebula in Orion

M78 taken on Jan 24, 2020. 300×30 sec, gain 42, offset 42, -20C, UHC-S filter, QHY183c, TV-85 at F/5.6.

This one was difficult to bring out the nebula since the UHC-S filter blocks some of the blue that this object predominantly shines in.  But, it captures enough of the OIII, Hydrogen Alpha and Beta light to produce an image even from the heavily light-polluted location that I’ve been imaging from.

The Rosette Nebula

Rosette Nebula on Jan 25, 2020. 67×30 sec, Gain 42, Offset 25, -20C, UHC-S filter, QHY183c, Televue TV-85 at F/5.6, Atlas EQ-G w/EQMOD.

I was surprised how well this came out with only about an hour of data.  I was after galaxies this night and I only took this to kill time.  Even the 33 minutes worth I posted initially looked half-decent.   I will have to devote a session to this one and possibly use the L-eNhance filter instead of the UHC-S.