2003 01 16 Mo Note
Martian Images taken on 16 January 2003 ( λ=124゚Ls) by Yukio MORITA

The seeing condition sometines improved to 5/10 the morning and MORITA worked from 5:38 JST to 6:28 JST (20:38 ~ 21:28 GMT).

Syrtis Mj is on the morning side with Libya light. Hellas whitish bright, most prominent in G so that it's frosty. Elysium evening water vapour cloud is brighter in B. Cebrenia is not light in B. The Ætheria dark patch is conspicuous as well as Utopia.

The apparent diameter δ is now up to 4.9".

Use is made of an f /7.7 Newtonian extended to f /50 having a 25 cm speculum equipped with an ST-5C (at -5゚C).

Image data are
    20 IR images each exposed with 0.1 secs
    20 R + IR Rejection images each with 0.2 secs
    20 G + IR Rejection images each with 0.4 secs
    20 B + IR Rejection images each with 0.5 secs

Used filters are Koh-eisha's RGB filtesr of type 3.

Observing site is located at Hatsuka-ichi, Hiroshima, Japan.

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