| Observing Location | East Tremont Ave @ Dogwood Dr, Bronx, NY
Lat.:
Long.: |
| Observational Period | 0515-0530 EDT |
| Atmospheric Conditions |
| Cloud Cover | Isolated Clouds |
| Temperature | 51°F |
| Wind | Calm |
| Humidity | Moderate |
| Barometric Pressure | 30.02" Hg Steady |
| Feels Like | Cool |
It looked like there were a few clouds showing up in the rapidly brightening sky to the east. I only saw one star, probably arcturus.
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| Instruments | Naked-eye - Charlie |
| Observing Party | Charlie Ridgway
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| 0433 EDT | Astronomical Twilight begins |
| 0509 EDT | Astronomical Twilight ends Nautical Twilight begins |
| Target | Iridium 37 Flare |
| Constellation | Cas |
| Category | Satellite |
Time yyyymmdd.hhmm | 20080418.0526 EDT |
| Comments | This was a very fast flare and the sky wasn’t bright enough that it should have been impacting its visibility. The satellite was falling from S to N. I estimated it to be at 22°M.
| Heavens Above |
| Alt. | 24° |
| Az. | 23° NNE |
| Mag. | -6 |
This flare was not listed on CalSky as of last night.
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| 0543 EST | Nautical Twilight ends Civil Twilight begins |
| 0612 EDT | Civil Twilight ends Sunrise |
| Observing Location | McGraw Ave between Virginia Ave and White Plains Rd, Bronx, NY |
| Observational Period | 0730-0800 EDT |
| Atmospheric Conditions |
| Cloud Cover | Clear |
| Temperature | 53°F |
| Wind | Light Breeze |
| Humidity | Moderate |
| Barometric Pressure | 30.04" Hg Rising |
| Feels Like | Mild |
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| Instruments | Brunton 8x21 compact binocular w/Welco gold shade 14 welder's filter - Charlie |
| Observing Party | Charlie Ridgway
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|---|
| Target | Iridium 52 Flare |
| Constellation | Cas |
| Category | Satellite |
Time yyyymmdd.hhmm | 20080418.0737 EDT |
| Comments | Not Seen
This flare was on the other side of the Big W.
| Heavens Above |
| Alt. | 53° |
| Az. | 52° NE |
| Mag. | -7.3 |
This is another flare that was not listed in CalSky.
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| Target | Sunspots |
| Constellation | Ari |
| Category | Solar |
Time yyyymmdd.hhmm | 20080418.0745 EDT |
| Comments | The Sun has snuck into Aries without my being aware of it.
Distance Light Time | 1.00 AU 8m 21s |
| Angular Size | 31' 54.2" |
| Altitude | 16.6° |
Heliographic Latitude (B0) | -5.30° |
Heliographic Longitude (L0) | 331.57° |
Parallactic Angle (P) | -25.75° |
Carrington rotation number (CR) | 2069 |
Nothing seen.
| | Groups | Spots | R |
| North | 0 | 0 | 0 |
| South | 0 | 0 | 0 |
| Total | 0 | 0 | 0 |
| R = (Groups * 10) + Spots) |
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| Observing Location | MetOval |
| Observational Period | 2100-2230 EDT |
| Atmospheric Conditions |
| Cloud Cover | Clear |
| Temperature | 64°F |
| Wind | Calm |
| Humidity | Moderate |
| Barometric Pressure | 29.97" Hg Rising |
| Feels Like | Mild |
I was very comfortable in a heavy long-sleeve shirt over a T-shirt and an unzipped poly vest.
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| Instruments | SAR: Coulter CT-100 Newtonian reflector - Charlie
- CelEDTron Omni 20mm (21x)
- CelEDTron Omni 2x Barlow
- w/Baader AstroSolar filter film
w/Baader AstroSolar filter film
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| Observing Party | Charlie Ridgway
|
|---|
| Target | Mars |
| Constellation | Gem |
| Category | Planet |
Time yyyymmdd.hhmm | 20080418.2120 EDT |
| Comments | Nothing spectacular. It was shining slightly golden. It is above Pollux’s left hip.
Starry Nights Starter graphic
Object Class | Classical Planet |
|---|
| Elongation | 79.8° E |
Distance Light Time (from Earth) | 1.51 AU 12m 36s |
Distance (from Sun) | 1.66 AU |
| Angular Size | 6.18" |
| Magnitude | 1.1 |
| Central Meridian | 246° |
| Altitude | 50.9° |
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I tried to get to M44 but the area lighting is getting into the scope and I can’t figure out if it is coming in the front end or from the bottom between the truss and the shroud.
| Target | Saturn |
| Constellation | Leo |
| Category | Planet |
Time yyyymmdd.hhmm | 20080418.2130 EDT |
| Comments | It looks like I am seeing separation between the planet and the rings at the ansae at both low and high power.
Saturn (Mag 0.5) is near Regulus and right next to HIP 50473 (Mag. 7.02).
Starry Nights Starter graphic
Object Class | Classical Planet |
|---|
| Elongation | 122.5° E |
Distance Light Time (from Earth) | 8.72 AU 1h 12m |
Distance (from Sun) | 9.30 AU |
| Angular Size | 19"x16.9" |
Ring Angular Size | 43"x7.39" |
Ring Inclination | 9.9° |
| Magnitude | +0.5 |
| Altitude | 61.7° |
| Starry Night Starter graphic |
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| Target | Moon |
| Constellation | Vir |
| Category | Lunar |
Time yyyymmdd.hhmm | 20080418.2140 EDT |
| Comments |
| Lunation | 1055 |
|---|
| Phase | Waxing Gibbous |
|---|
| Age | 12d 21h 44m |
Distance Light Time (from earth) | 396,837 km 1.32s |
| Elongation | 164.3° E |
| % Illuminated | 98.2% |
| Morning Terminator Colongitude (λ E) | 71.0° |
| Evening Terminator Colongitude (λ W) | 251.0° |
| Libration in Latitude | 5° 26' |
| Libration in Longitude | 4° 20' |
| Magnitude | -12.2 |
| Angular Size | 30.11' |
| Altitude | 31° 37' |
| Virtual Moon Atlas graphic |
| Terminator |
| In Shadow | Feature | In Sunlight |
| <<< | Anaximenes | |
| <<< | Carlenter | |
| | Anaximander (Class 5, 46 mi) | >>> |
| | J Herschel (Extremely Old, 105 mi) | >>> |
| | Babbage Extremely Old, 85 mi x 95 mi) | >>> |
| <<< | Pythagoras (Class 1, 81 mi x 90 mi) | >>> |
| <<< | Oenopides (Very Old, 46 mi) | >>> |
| | South (Extremely Old, 63 mi x 67 mi) | >>> |
| | Markov (Old, 25 mi x 27 mi) | >>> |
| | Harpalus (Class 1, 26 mi) | >>> |
| <<< | Russell | |
| <<< | Struve | |
| <<< | Eddington Old, 80 mi x 90 mi) | >>> |
| | Seleucus (Class 1, 29 mi) | >>> |
| <<< | Krafft (Old, 31 mi) | >>> |
| <<< | Cardanus (Class 2, 31 mi) | >>> |
| <<< | Riccioli | |
| | Grimaldi (Class 5, 140 mi x 145 mi) | >>> |
| <<< | Schicard (Class 5, 135 mi x 150 mi) | >>> |
- Mare Crisium
- Palus Somni is a brighter shade of gray extending out into Mare Tranquilitatis.
- Proclus (Class 1, 18 mi) is visible between Palus Somni and Mare Crisium.
- Mare Undarum and Mare Spumans appear darker than usual and are more easily seen.
- Condorcet (Class 5, 49 mi) is visible below Mare Crisium and above Mare Undarum.
- Delmontte (35mi)
- Eimmart (Class 1, 25 mi x 28 mi)
- Mare Fecunditatis
- Langrenus (Class 1, 85 mi)
- Stevinus (Class 5, 99 mi x 110 mi)
- Furnerius (Class 5, 81 mi)
- Gutenbert (Class 5, 45 mi)
- Capella (Old, 31 mi)
- Mare Imbrium
- Aristarchus (Class 1, 25 mi) is chalky white
- Copernicus (Class 1, 60 mi) is big and bright but surrounded by lighter gray of its ejecta blanket, mainly to the NE.
- Babbage (Extremely Old, 85 mi x 95 mi) appears to have a domed central peak which is actually the crater Babbage C (Class 1, 8 mi)
- Montes Recti (55 m1 x 12 mi)
- Montes Teneriffe (35 mi x 65 mi, 6200 ft)
- Mons Pico (10 mi x 18 mi, 9600 ft)
- Mare Serenitatis
- Manilius (Class 1, 25 miles) is bright white
- Manilius (Class 1, 16 mi x 19 mi) is bright white
- Mare Nubium
- Pitatis (Very Old, 60 mi x 69 mi)
- Bullialdus (Class 1, 38 mi)
The moon appears less round naked-eye than it does through the telescope.
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Naked-eye Limiting Magnitude Observations |
| | N 3.03 | |
E 1.58 | Zenith 2.41 | W 2.68 |
| S 2.01 | |
| Star | Magnitude |
| Bootes, The Herdsman |
Arcturus α Boo | -0.05 |
Murfid η Boo | 2.68 |
| Ursa Major, The Great Bear |
|---|
Alkaid η UMa | 1.85 |
Mizar &seta; UMa | 2.23 |
Alioth ε UMa | 1.76 |
Dubhe α UMa | 1.81 |
Merak β UMa | 2.34 |
Phad γ UMa | 2.41 |
| Virgo, The Maiden |
|---|
Spica α Vir | 0.98 |
| Leo |
Regulus α Leo | 1.36 |
Algieba γ Leo | 2.01 |
| Auriga, The Charioteer |
Capella α Aur | 0.08 |
Al Anz ε Aur | 3.03 |
| Gemini, The Twins |
Castor α Gem | 1.58 |
Pollux β Gem | 1.16 |
| Canus Minor, The Little Dor |
Procyon α CMi | 0.40 |
This wasn’t a concerted effort to see how deeply I could see but a quick look around and noting the stuff that was most easily seen. I saw more deeply to the N and W because I wasn’t looking into floodlights in those directions
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After an hour-and-a-half my back was getting sore and the lights were impacting my ability to see what I wanted to observe other than the Moon so I packed it in.