13 November 2007

Observing Location	MO
Observational Period	2000-2200 EST
Atmospheric Conditions	Cloud Cover Clear Temperature 55° Wind Calm Humidity Moderate Feels Like Cool The humidity seemed to increase during the period and when I got home my skin felt clammy. The sidewalks were still wet from the rain earlier in the day. A couple of times a thin patch of cloud passed through but it didn't last long. Transparency Good Seeing I
Instruments	Golden Gate 7x35 binocular - Charlie SAR: Coulter CT-100 Newtonian reflector - Charlie Celestron Omni 20mm (21x) Celestron Omni 2x Barlow
Observing Party	Charlie Ridgway

Target 17P/Holmes Constellation Per Category Comet Time yyyymmdd.hhmm 20071113.2000 EST 2007 Nov 14.06 UT Comments Star Mag. Descrioption α Per 1.79 Brighter β Per 2.10 Brighter γ Cas 2.15 Brighter α Cet 2.54 Brighter β Ari 2.64 Brighter θ Aur 2.65 Brighter ι Aur 2.69 Brighter ζ Per 2.84 Brighter ε Per 2.90 Brighter γ Per 2.91 Brighter β Tri 3.00 Brighter δ Per 3.01 Brighter ε Aur 3.03 Brighter η Aur 3.18 Brighter ρ Per 3.22 Dimmer α Tri 3.42 = or Brighter η Cas 3.46 Brighter γ Cet 3.47 Brighter 41 Ari 3.61 Brighter ε Cas 3.65 Brighter ζ Cas 3.69 Brighter 17P/Holmes ~3.69   ζ Aur 3.69 Dimmer δ Aur 3.72 Dimmer ν Per 3.77 Dimmer η Per 3.77 Dimmer κ Per 3.79 Brighter α Psc 3.82 Dimmer ω Per 3.84 Dimmer γ Ari 3.88 Dimmer τ Per 3.93 Dimmer ν Aur 3.97 Dimmer ξ Per 3.98 Dimmer φ Per 4.01 Dimmer γ Tri 4.03 Dimmer ι Per 4.05 Dimmer δ Cet 4.08 = θ Per 4.10 Dimmer μ Per 4.12 Dimmer κ Cas 4.17 Dimmer ξ Per 4.25 Dimmer μ Cet 4.27 Dimmer π Aut 4.30 Dimmer ξ Cet 4.30 Dimmer ψ Per 4.32 Dimmer θ Cas 4.34 Dimmer ε Per 4.36 Dimmer τ Aur 4.51 Dimmer υ2 Cas 4.62 Dimmer π Per 4.68 Dimmer χ Cas 4.68 Dimmer λ Aur 4.69 Dimmer χ Aur 4.71 Dimmer χ Cet 4.71 Dimmer υ Aur 4.72 Dimmer λ Cas 4.74 Dimmer μ Aur 4.82 Dimmer υ1 Cas 4.83 Dimmer δ Tri 4.84 Dimmer ν Cas 4.87 Dimmer ξ Aur 4.96 Dimmer ρ Aur 5.02 Dimmer ι Ari 5.09 Dimmer μ Cas 5.17 Dimmer ρ Aur 5.22 Dimmer 7 Tri 5.26 Dimmer ω Aur 5.46 Dimmer ε Tri 5.50 Dimmer Power FoV Count Diameter 21.6x 2.3° 6 0.38° 23.0’ 43.2x ~1°     I was not able to see the comet with the Barlow tonight. After I estimated the size of the comet by counting the number of times it would fit in mt FoV I noticed that it was between HIP16394 and HIP 16196 and filled the space entirely.Planetarium says those stars are 23’24” apart. There are two web pages that list recent comet observations. New Comet Observation Home Page: Recent News and Observations http://cometobservation.com/ RecentObs.html ICQ/CBAT/MPC: Recent Comet Brightness Estimates http://cfa-www.harvard.edu/ icq/CometMags.html I have submitted some of my observations to the first, but because I can more easily get the data out of the second for my spreadsheet have switched to it for the line graphs.

Target Ceres Constellation Cet Category Dwarf Planet Time yyyymmdd.hhmm 20071113.2200 EST Comments With the handheld binocular I was able to see a faint smudge where Ceres should be.