Observation by Mazin Younis: Lemmon DATA

Uploaded by

Mazin Younis

Observer

Mazin Younis

Observed

2025 Sep 13 - 00:05

Uploaded

2025 Sep 15 - 18:08

Objects

C/2025 A6

Equipment

Sky-watcher Quattro 8 f/4
ASI 2600MC Duo

Exposure

16 x 60s

Location

Personal Remote Telescope - Morocco

Title

Lemmon DATA

About this image

First time for me to use Tycho Tracker. I measured Magnitude 10.3-10.2 (on 13th Sept), estimated coma diameter at about 59000km, and tail radius 1.2 arcminutes.

Files associated with this observation

A6_Data.png (597.1 kB)

Like this image

Alan C Tough, Jeremy Shears, Dominic Ford

Comments

Nick James, 2025 Sep 16 - 05:24 UTC

Tycho is a really capable program and you should be able to get high quality magnitude estimates given the dark skies at your setup in Morocco. Tycho will let you estimate the total magnitude which is quite a bit brighter than the inner coma magnitude that you have measured. There are details of how to do this in the last edition of the Comet's Tale (see the article starting on page 25 here).

Mazin Younis

Mazin Younis, 2025 Sep 16 - 12:35 UTC

Thank you Nick for your guidance. I’ve just begun using Tycho, and hopeful my skills will improve with practice over time.

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