Lunar Observing Schedule for: USA MT Helena



Produced by the Department of Physics at Aberystwyth University, UK
Ill is percentage illumination of the Moon


2025-Apr-01 UT 02:27-03:21 Ill=10% Earthshine: sporadic meteors

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m


2025-Apr-02 UT 02:29-04:40 Ill=19% Earthshine: sporadic meteors

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m


2025-Apr-03 UT 02:30-05:52 Ill=30% Earthshine: sporadic meteors

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m


2025-Apr-04 UT 02:32-06:56 Ill=41% Earthshine: sporadic meteors

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m


2025-Apr-05 UT 02:33-07:48 Ill=52% Earthshine: sporadic meteors

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m


2025-Apr-09 UT 05:11-05:21 Ill=87% Proclus

     ALPO Request: On 1989 Feb 17 David Darling made an observation 
     about the brightness of the east and west walls of Proclus. We 
     would like you to image, sketch, or just visually note which 
     is brighter, the east or the west rim of this crater? 
     Telescopes of aperture 6 inche or larger should be used. 
     Please send any observation you make to: 
     a t c @ a b e r . a c . u k


2025-Apr-11 UT 08:15-08:50 Ill=97% Aristarchus

     BAA Request: Look for colour along the edge od the SW ray 
     between Aristarchus and Herodotus. Mimimu sized telescope 
     diameter 8". Try to use a magnification of between 100 and 200x.
     Use red, blue filters to verify colour e.g. Wratten 25 and 
     Wratten 44a. Otherwise use colour imaging - but keep the 
     exposure short enough to avoid saturating Aristarchus or the SW 
     ray. Any sketches or colour images should be emailed to:
     a t c @ a b e r . a c . u k


2025-Apr-13 UT 06:24-07:49 Ill=100% Mare_Humboldtianum

     BAA Request: Mare Humboldtianum. We are trying to replicate, 
     using modern day images, a sketch in Plate I in BAA The Moon 
     from published: 1950 Jun Vol 1, No. 1. Its for a sketch by 
     K.W. Aboneri from 1949 Sep 7. Please send any images to: 
     a t c @ a b e r . a c. u k .


2025-Apr-16 UT 08:31-11:06 Ill=90% Cyrillus

     BAA Request: Cyrillus. There is a small white craterlet just 
     north of the three central peaks. We are interested to receive 
     high resolution images of this in order to find out at what 
     selenographic colongitude, in the lunar evening, that it loses 
     it's white spot appearence. Please use scopes largher than 6 
     inches in diameter. 
     Please email these to: a t c @ a b e r . a c . u k


2025-Apr-23 UT 11:52-11:55 Ill=25% Earthshine: Lyrids: ZHR=15 (vel=47km/s) & Pi Puppids: ZHR=var (vel=18km/s)

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m


2025-Apr-30 UT 03:10-03:31 Ill=8% Earthshine: sporadic meteors

     These can only be observed using low-light level cameras running at 25 frames per sec,
     or faster, and capable of recording 9th or 10th magnitude stars in real time.
     Dates/UTs of observing runs, or detections of impacts, should be emailed to:
     ALPO - email: c u d n i k @ s b c g l o b a l . n e t
     BAA - email: a t c @ a b e r . a c . u k
     UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m