Sky & Telescope - USA (2019-11)
skyandtelescope.com • NOVEMBER 2019 39 pBias frames, which are zero-length exposures, record only the readout noise generated wi ...
Scrubbing Data 40 NOVEMBER 2019 • SKY & TELESCOPE First, bias and dark calibration masters are generated by averaging all th ...
DUSK: Saturn, the waxing lunar crescent, and Jupiter form a line 22° long in the south-southwest after sunset. The two gas giant ...
USING THE NORTHERN HEMISPHERE MAP Go out within an hour of a time listed to the right. Turn the map around so the yellow label f ...
ε λ ν 61 ξ τ υ σ ρ LACERTA CYGNUS (^5) ° (^) b in oc ula r (^) vi ew WHEN TO USE THE MAP Late Sept Midnight Early Oct 11 p.m. La ...
44 NOVEMBER 2019 • SKY & TELESCOPE Mercury Saturn Uranus Neptune 10 " Nov 1 11 21 30 116 30 11630 16 16 Venus Jupiter Mars N ...
T he autumn sky can be faulted for having many dim constellations. But something that always pleases me about it is the number o ...
46 NOVEMBER 2019 • SKY & TELESCOPE NOVEMBER 2019 OBSERVING Sun, Moon & Planets by Fred Schaaf I t’s an unusually excitin ...
skyandtelescope.com • NOVEMBER 2019 47 tqThese scenes are drawn for near the middle of North America (latitude 40° north, longit ...
Transit of Mercury The mighty mite of planets gets between us and our star this month. It’s diffi cult to mistake Mercury for a ...
S& T^ I LL US TR AT ION /^ S OU RC E:^ FR ED ES PE NA K^ ( 2 ) If you don’t have access to a white- light or H-alpha fi lter ...
NOVEMBER 2019 OBSERVING Celestial Calendar 50 NOVEMBER 2019 • SKY & TELESCOPE Oct. UT Nov. UT 3 1:23 3 14:19 5 22:12 6 11:08 ...
The wavy lines represent Jupiter’s four big satellites. The central vertical band is Jupiter itself. Each gray or black horizont ...
O n the night of September 23, 1846, German astronomer Johann Gott- fried Galle called out the confi gurations of stars in the f ...
pWes Lockwood at the controls of the 21-inch refl ector. He used the telescope to monitor Neptune for nearly half a century. pTh ...
AD AM BL OC K^ / M OU NT LE MM ON SK YC EN TE R^ / UN IVE RS ITY OF AR IZO NA /^ C C^ B Y-S A^3 .^0 US Come the Night Explore th ...
PO SS II^ /^ S TS CI^ /^ C AL TE CH /^ P AL OM AR OB SE RV AT OR Y skyandtelescope.com • NOVEMBER 2019 55 visible through the ...
NG C^7 013 &^ NG C^7 06 3 :^ PO SS II^ /^ S TS CI^ /^ C AL TE CH /^ P AL OM AR OB SE RV AT OR Y;^ EG G^ N EB UL A:^ NA SA ...
The Farthest Star The author walks us through progressive steps outside of our solar system in his quest for the farthest visibl ...
NOVEMBER 2019 OBSERVING Going Deep ES O^ ( 4 ) 58 NOVEMBER 2019 • SKY & TELESCOPE Massive stars burn brightly and use their ...
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