[AZ-Observing] Re: Mining Old Silver..OLD vs NEW EQUIP
- From: Brian Skiff <bas@xxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Thu, 19 Mar 2020 17:14:10 -0700
On Mar 19, 2020, at 5:02 PM, Paul Lind <pulind@xxxxx> wrote:
----- Original Message -----
From: Bernard Miller <bgmiller011@xxxxxxx>
To: az-observing@xxxxxxxxxxxxx
Sent: Sun, 15 Mar 2020 11:15:05 -0400 (EDT)
Subject: [AZ-Observing] Re: Mining Old Silver
-----------------------------------------------------
Bernard and others,
Thanks for your nice comments and questions about my 1997 Hale Bopp-photos
taken with an 8 inch Astrograph. Here's some info about the astrograph, more
than you probably want. Yes, this was "Old School" imaging. It was
"Current" or perhaps "Leading Edge" in 1997. And, these images could be
taken today with off-the-shelf cameras and lenses, say a 400mm f/4 DSLR,
which I'll explain below. BUT WE'D NEED ANOTHER HALE-BOPP!
…although it won’t be another Hale-Bopp, imagers and visual observers should
follow Comet C/2019 Y4 ATLAS. This is already a nice telescopic object, up in
the northeast at dusk. It will be coming westward toward the Sun in the coming
months, reaching naked-eye brightness around the first of May — and possibly
mag 0 near perihelion in late May, but it will be very close to the Sun by then
(perihelion is inside Mercury’s orbit).
A good source for current information about available comets is Seiichi
Yoshida’s page here:
http://www.aerith.net/comet/weekly/current.html
\Brian
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