Observation by Tim Haymes: (364) Isara and Galaxies in Leo

Uploaded by

Tim Haymes

Observer

Tim Haymes

Observed

2025 Apr 11 - 22:00

Uploaded

2025 Apr 14 - 12:24

Objects

NGC2487
NGC2486
364 Isara
Lightcurve

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Constellation

Gemini

Field centre

RA: 07^h57^m
Dec: +25°10'
Position angle: -1°07'

Field size

0°21' × 0°13'

Equipment

C11
QHY174mGPS
SW 80mm + ASI120 guider
EQ8

Exposure

Occultation: 80ms, Deep images 30s

Location

North Oxfordshire

Target name

(364) Isara

Title

(364) Isara and Galaxies in Leo

About this image

I postponed my Winchester Weekend registration (!) to observe this occultation from home on Friday evening. The 13th mag asteroid is seen approaching the 12th mag star in this stack of 30s FITS exposures. An occultation with duration 1.5 sec was recorded at 80ms cadence in SER format. The Tangra light curve is shown at upper right. The D/R contacts are caused by the disappearance of the star, while (in this example) the asteroid remains faintly visible.

Two other UK observers and three from Europe contribute the resulting outline plot lower right - data is preliminary.

My timings were: D 2200 12.04, R 2200 13.50 +/- 0.1s These are reported to the European SODIS database.

Files associated with this observation

Galaxy Field with asteroid and overlays.jpg (552.8 kB)

Like this image

Robin Leadbeater, Dominic Ford

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