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Playing with drizzle: the Elephant's trunk

Technical card

Resolution: 3135x2325

Dates: Aug. 29, 2015

Frames: Baader Planetarium Ha 7nm: 72x600" -10C bin 1x1

Integration: 12.0 hours

Darks: ~15

Flats: ~20

Bias: ~40

Avg. Moon age: 13.86 days

Avg. Moon phase: 99.07%

Bortle Dark-Sky Scale: 7.00

Temperature: 25.00

Astrometry.net job: 763792

RA center: 323.704 degrees

DEC center: 57.486 degrees

Orientation: 177.254 degrees

Field radius: 0.651 degrees

Locations: Castenedolo, Castenedolo, Italy

Description

Since my setup is a little bit undersampled, I'm in the perfect situation to test PixInsight's drizzle algorithm.
It allows to really enhance resolution using a technique developed for the HST images.

The subject is a classical for this season: the Elephant's trunk in Cepheus.
Unfortunatey the data were acquired from my town in a misty night wint the full Moon so there is a lot of noise and the S/N ratio is quite poor.

Anyway it is very interesting to compare the 2 X drizzled image with the normal upscaled image (see image B) the increase in resolution is obvious.

Finally I managed to get some extra data:
Revision A is the original image with 3.8 hour of integration revision C is the final release waiting for OIII and SII data.

Comments

Author

Edoardo Luca Radi...
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Playing with drizzle: the Elephant's trunk, Edoardo Luca Radice (Astroedo)

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APT - Astro Photography Tool

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