Desde el Observatorio de Oro Verde de la Asociación Entrerriana de Astronomía Francisco Alsina Cardinalli, Juan Manuel Biagi y Alberto Anunziato realizamos el día 24 de octubre de 2015 una serie de observaciones lunares con nuestro telescopio Meade LX 200 de 250 mm. y la Webcam Phillips SPC900NC a foco primario. Observamos Gassendi, Plato y Aristarchus para el programa de la British Astronomical Asociation (BAA) y la Association of Lunar and Planetary Observers (ALPO) Lunar Geological Change Detection Program. Subimos las imágenes y los videos correspondientes a IMAPS Computing Support – Amateur Astronomy Outreach.
Gassendi:
Name and location of observer: Francisco Alsina Cardinalli (Oro Verde, Argentina).
Name of feature: Gassendi.
Date and time (UT) of observation: 10-24-2015: 03.43.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Filter (if used): Oxigen III Narrowband Filter-1.25 In.
Medium employed (for photos and electronic images): Phillips SPC900NC webcam
Seeing: 7/10.
Esta era la observación requerida:
2015-Oct-24 UT 01:58-03:43 Ill=84% Gassendi observed by Madej_P on 1985-5-30
On 1985 May 30 P.Madej (Huddersfield, UK, 77mm refractor, x111 and x250, seeing II-III, transparency good) whole spectrum of colours seen on the central peak area, visible in both eyepieces, and was more prominent at the higher magnification. Not aware if the observer checked for this effects on other terminator peaks? ALPO/BAA weight =1.
Plato:
Name and location of observer: Alberto Anunziato (Oro Verde, Argentina).
Name of feature: Plato.
Date and time (UT) of observation: 10-24-2015: 04.36.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Filter (if used): None.
Medium employed (for photos and electronic images): Phillips SPC900NC webcam
Seeing: 7/10.
Esta era la observación requerida:
2015-Oct-24 UT 04:27-06:39 Ill=84% Plato observed by North_G on 1981-8-11 *
On 1981 Aug 11 at UT21:05-21:36 G. North (England, seeing=poor) detected, in green light, a darkening on the floor of Plato. This effect was not seen elsewhere. J-H Robinson (Teighmouth, Devon, UK) detected on the SSE rim (inner and beyond) a triangle that appeared hazy in a wide range of filters at 21:05UT. However at 21:36UT it was only hazy in green and blue light. No similar effect was seen elsewhere. The Cameron 2006 catalog ID=150 and weight=5. The LPO/BAA weight=3.
Aristarchus:
Estas eran las observaciones requeridas:
2015-Oct-24 UT 01:38-03:23 Ill=83% Aristarchus observed by Moore_P on 1985-5-30 . On 1985 May 30 at UT 20:10-23:54 P.Moore (Selsey, UK, 15″ reflector) and at the same time Doherty (Sussex, UK, 15″ reflector) observed a strangely bright and pink/red north rim of Aristarchus crater during UT20:20 and 20:36UT. The effect reduced between ~20:39 and 20:44UT. M.C. Cook (Frimley, UK) found the northern wall to have a red/purple colour but the effect vanished after 50 minutes. Cook also saw a «V»- like notch in the NW crater shadow and this appeared to be bigger than normal. G. North (Sussex, UK) saw a tinge of pink colour on the northern rim and a bit later a «ruby red» colour on the north-west wall – again this effect lasted 50 minutes. Moseley verified the colour. Finally M. Hather (Yorkshire, UK) suspected the north wall of Aristarchus to be blue in colour. Cameron suspects that this TLP is not spurious colour because it is in the wrong place. The Cameron 2006 catalog ID=276 and the weight=5. The ALPO/BAA weight=4.
2015-Oct-24 UT 03:46-05:26 Ill=84% Aristarchus observed by Foley_PW on 1975-12-14
Aristarchus 1975 Dec 14/15 UT 17:05-00:30 Observed by Foley (Dartford, England, 12″ reflector, S=II) and Moore (Sessex, England, 15″ reflector x250 S=IV) and Argent and Brumder (Sussex, England) «In early sunrise conditions, W. wall was less brilliant than usual — matched only by Sharp, Bianchini, & Marian. Extraordinary detail could be seen on this wall. Also noted intense & distinctly blue color entire length of W. wall. 3 others corroborated detail, but not color. Moore found things normal & saw Aris. brightest at 2030-2125h tho Argent & Brumder
made it < Proclus» NASA catalog weight=4. NASA catlog ID #1422.
ALPO/BAA weight=1.
2015-Oct-24 UT 04:33-05:26 Ill=84% Aristarchus observed by Zeller_P on 2013-4-22
On 2013 Apr 22 UT 01:39-02:37 P. Zeller (Indianapollis, USA, 10″ f/4 reflector, x200, seeing 6, Transparency 3 – scattered cirrus) observed visually (depicted in sketch) the two closely spaced NW wall dark bands) to have a rusty-red hue. The colour of these bands did not change over the period of the observing session. Images were taken, but resolution and image S/N is not sufficient to resolve separate bands here, or to detect colour. The ALPO/BAA weight=2.
2015-Oct-24 UT 05:17-05:26 Ill=84% Aristarchus.
ALPO Request: On 2013 Apr 22 Paul Zellor noticed that the two closely spaced NW dark bands in Aristarchus had some (non-blue) color to them. Can we confirm his observation of natural colour here? Ideally you should be using a telescope of 10″ aperture,or larger.
Pudimos observar Aristarchus de 01.30 a 01.55 (04.30 a 04.55 UT).
Las 3 primeras observaciones requeridas correspondían a http://users.aber.ac.uk/atc/tlp/tlp.htm, la última al Lunar Observing Schedule y era la más prioritaria. Nuestras observaciones cubrieron parte del horario correspondiente a la segunda y a la tercera, se realizaron con posterioridad al horario de la primera y no alcanzaron a cubrir el horario de la última, ya que las nubes cubrieron por completo Aristarchus a las 01.55, como quedó registrado en video.
