Observation by Des Middlemass: Sh2-111 and PN EL1

Uploaded by

Des Middlemass

Observer

Des Middlemass

Observed

2026 Jul 28 - 00:00

Uploaded

2026 Aug 11 - 12:13

Objects

Sharpless 111

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Constellation

Cygnus

Field centre

RA: 21^h41^m
Dec: +29°58'
Position angle: -179°57'

Field size

2°17' × 1°18'

Equipment

Takahashi FSQ106EDX4, ASI2600MM, Optolong 7nm HSO filters

Exposure

15 hours (300 sec subs)

Location

Starfront, Rockwood, Texas

Target name

SH2-111 Emission nebula and PN EL1

Title

Sh2-111 and PN EL1

About this image

Completed over 4 nights in July.

Rarely imaged emission of SH2-111 as it is very dim.

Also in this image is the planetary EL-1 discovered by amateur astronomer David Elmore in 2002. (The small diffuse circular blue nebulosity at 3 o'clock)

I have not yet been able to find out what is causing the structure to the top-right of the PN, which appears to possibly have an OIII shock front.

Files associated with this observation

SH2-111_and_EL1_PN_530mm_HSO_15hrs_HD3crop.jpg (4.7 MB)

Like this image

Callum Potter, Simon Paul Davis

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