Lunar Observing Schedule for: USA CO Denver



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


2025-Apr-01 UT 01:51-02:44 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 01:52-03:59 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 01:53-05:09 Ill=29% 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 01:54-06:12 Ill=40% 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 01:55-07:06 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 05:11-05:45 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 06:24-07:21 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-15 UT 06:44-08:17 Ill=95% Aristarchus

     BAA Request: Do the appearance of the bands on the crater rim 
     vary (blur) in appearance over time? Compare them to bands in 
     other craters e.g. Herodotus, Kepler, Copernicus. If you do 
     see any variations in sharpness, see how it relates to 
     atmospheric seeing condtions. All images or sketches should 
     be emailed to: 
     a t c @ a b e r . a c. u k 


2025-Apr-15 UT 10:02-10:33 Ill=95% Geminus

     BAA Request: On 2011 Jan 21 Nigel Longshaw suspected the 
     eastern side of Geminus (on the border of the crater filled 
     shadow and the eastern illuminated rim) had a colouration to 
     it. This extended for a short distance from the floor shadow 
     into the illuminated rim width and spanned  from the north to 
     the south of the crater. For a comparison, Cleomedes was 
     checked but nothing unusual was noticed in its shadow. The 
     observer notes that Elger also saw colour here too. Its 
     probable that some natural surface colouration was observed, 
     but this needs to be checked out? Telescopes of aperture 4" 
     or larger are needed to observe this effect. If you have a 
     refractor, then try using this, otherwise a reflector will do 
     just as well. Please send any sketches, images, or visual 
     descriptions to: a t c @ a b e r . a c. u k .


2025-Apr-16 UT 06:44-11:30 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-21 UT 11:24-11:46 Ill=46% 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-22 UT 11:08-11:45 Ill=35% 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-23 UT 11:03-11:43 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 02:22-02:48 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