cometcatcher
22-01-2017, 01:18 PM
I've been wanting to image this since I saw Fred's (and others) image a couple of years ago. Not sure how well a DSLR would go, but since I could see a faint smudge on a single sub I thought there was a chance, even though I am working with hot summer nights. Sensor noise is like a snow storm at these temps with an uncooled camera.
This is my longest run to date, with 1147 x 30 second (unguided) subs, or about 9.5 hours total. 1147 RAW files take quite a bit if disc space! Two cameras were used, a Pentax K-5 which is better than the Canon 1100D for OIII regions and the modified Canon 1100D for Ha regions. Baader nebula and Astronomik CLS filters were used. Data was collected over 4 nights, stacked in DSS and processed in photoshop. GSO 10" F4 Newtonian, HEQ5-Pro. Humidity was at 85% for most of the duration. Everything was soaking wet afterwards. The things we do for just one piccy!
A few details about the Pencil Nebula stolen from Wiki.
"On 1 March 1835, John Herschel discovered this object at the Cape of Good Hope.... NGC 2736 (also known as the Pencil Nebula) is a small part of the Vela Supernova Remnant that took place 11,000 years ago, located near the Vela Pulsar in the constellation Vela. The nebula's linear appearance triggered its popular name. It resides about 815 light-years away from the Solar System. It is thought to be formed from part of the shock wave of the larger Vela Supernova Remnant. The Pencil Nebula is moving at roughly 644,000 kilometers per hour."
This is my longest run to date, with 1147 x 30 second (unguided) subs, or about 9.5 hours total. 1147 RAW files take quite a bit if disc space! Two cameras were used, a Pentax K-5 which is better than the Canon 1100D for OIII regions and the modified Canon 1100D for Ha regions. Baader nebula and Astronomik CLS filters were used. Data was collected over 4 nights, stacked in DSS and processed in photoshop. GSO 10" F4 Newtonian, HEQ5-Pro. Humidity was at 85% for most of the duration. Everything was soaking wet afterwards. The things we do for just one piccy!
A few details about the Pencil Nebula stolen from Wiki.
"On 1 March 1835, John Herschel discovered this object at the Cape of Good Hope.... NGC 2736 (also known as the Pencil Nebula) is a small part of the Vela Supernova Remnant that took place 11,000 years ago, located near the Vela Pulsar in the constellation Vela. The nebula's linear appearance triggered its popular name. It resides about 815 light-years away from the Solar System. It is thought to be formed from part of the shock wave of the larger Vela Supernova Remnant. The Pencil Nebula is moving at roughly 644,000 kilometers per hour."