Asteroid (9241) Rosfranklin (+ friend....) (Pam Whitfield)

Contains: Solar system body or event

Asteroid (9241) Rosfranklin (+ friend....)

Revision title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

Asteroid (9241) Rosfranklin (+ friend....)

Revision title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

(9241) Rosfranklin was named for the crystallographer Rosalind Franklin and as it's also my field I chose it as my first ever asteroid target - more fool me! It was only mag +18.2 so a difficult target in my light polluted southern horizon but passed meridian at a decent time and 52deg altitude no not impossible.
These data were collected using the Orbitals plugin in NINA utlizing the comet tracking in PHD2. As per a comet the data were registered and stacked twice to obtain an image without trailing. (9241) Rosfranklin wasn't moving that quickly so no data were acquired at sidereal rate - the slightly eggy stars were given some attention in post-processing.
At magnitude +18.2 the asteroid was only detectable by eye in three of the 300s subs so the comet stacking in APP relied heavily on the time-stamps in the files.
I was half expecting coming away with nothing to show from the evening so I'm more than happy with the result. Even a touch fainter or lower would probably have been a bust!

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Final
B

B

Title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

Description: The original processing identified a second asteroid - 7693 Hostitakuhai at mag +17.8 - in the subs but it's motion was very different so a second 'comet-stacking' was needed to get a static image of it. All stacks used the same reference frame so the positions should be correct for that moment in time (2022-05-04 22:00 UT). The two separate asteroid images were combined at the linear stage so their relative brightness should be pretty close to reality

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Asteroid (9241) Rosfranklin (+ friend....)

Revision title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

Asteroid (9241) Rosfranklin (+ friend....)

Revision title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

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Asteroid (9241) Rosfranklin (+ friend....)

Revision title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

Asteroid (9241) Rosfranklin (+ friend....)

Revision title: Added another stack to get a second static asteroid image, 7693 Hositakuhai

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