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Observation by Peter Goodhew FRAS: New Discovery in Corona Borealis

Uploaded by

Peter Goodhew FRAS

Observer

Peter Goodhew FRAS

Observed

2020 Jul 13 - 10:07

Uploaded

2020 Jul 21 - 10:13

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Constellation

Corona Borealis

Field centre

RA: 16h01m
Dec: +38°02'
Position angle: -6°51'

Field size

0°36' × 0°24'

Equipment
  • APM TMB 152 LZOS Refractors
  • 10Micron GM2000 HPS mount
  • QSI6120wsg8 cameras
Exposure

5nm Ha: 21x1800" bin 2x2 5nm Ha: 59x1800" bin 4x4 Blue: 20x300" bin 1x1 Green: 18x300" bin 1x1 Lum: 34x300" bin 1x1 OIII 3nm: 54

Location

Fregenal de la Sierra, Spain

Target name

Possible Planetary Nebula in Corone Borealis

Title

New Discovery in Corona Borealis

About this image

A joint discovery with expert galactic prospector Dana Patchick. This is the first ever image taken. It is believed to be a possible planetary nebula, but getting confirmation of this via spectroscopy is going to be challenging as it is so faint. Capturing this required almost 60 hours of data shot at bin 4x4. Processing was problematic in terms of separating the nebula from faint gradients. Luckily my two scopes are oriented 180 degrees from each other to avoid the cameras colliding during autofocus. This made it possible to detect the gradients by processing the data from each scope separately and then comparing the two images. Background subtraction was used to stretch the faint signal before re-adding the background.

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