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Photos by
Th.Boeckel, Martin Rietze
(mr)
So far, the brightness is developing better than expected.
Thus, there is a real possibility that comet ZTF E3 could
may reach the magnitude
4.5
(mag)*
at the end of January 2023!
08.February 2023
'Clear sky' at the Auerberg (Bavaria)
The appearance of the comet ZTF E3 has now the estimated brigness
of
the magnitude
5,6 (mag)*
and could'nt be seen
anymore with the unaided eye.
18:45 UT, Nikon 300mm
f4.0, 2x91sec, Iso 3200, , Sony a7III
19:12 UT, Newton Orion
900mm f4,5,
2x91sec, Iso 3200, Sony a7III
29.January 2023
Escape in the alps I (Heiterwang/Austria)
No chance in Germany
because of a never ending bad weather caused by an gigantig
dense fog layer over whole Europe.
The only hope were the southern lain areas in
the EU Alps. They worked in function like a
barrier and kept mostly the areas fog and cloud
clean.
Nikon 300mm; f4.00
127sec,
ISO 1600
and
Newton 900mm f4.5;;
Sony
a7III ; 130sec,ISO 3200
Sony a7III, Newton 900mm f4.5, 127sec,ISO
1600
Nikon 300mm; f4.0
and
, Newton 900mm f4.5; Sony
a7III,6x130sec,ISO
1600
The appearance of the comet ZTF E3 has now the estimated brigness
of
the magnitude
4,6 (mag)*
and could be seen
more or less easy with the unaided eye.
 mr
The weather situation in the Rofan mountains and
in most of the alpine valleys did not allow any
observations with heavy astro equipment.
So I found again in a valley at Heiterwang near
Reutte with a lot of luck a clear sky.
Furthermore is was at minus
12°C fu...
cold!
27.January 2023
Escape in the alps II
(Plose / Brixen / Italia)
Nikon 300mm, f4.0,
6x95sec und
Newton 900mm f4.5;
Sony
a7III;130sec,ISO 3200
 mr
Image stacke of apprx. one hour centered on the
coma from Martin Rietze
25. January 2023
Escape in the alps III
First clear sky in Heiterwang/Reutte (Austria).
Nikon 300mm; f 3.5,
2x60sec
und
Newton 900mm f4.5; Sony
a7III; 2x95sec,ISO 3200
 VIDEO
1
VIDEO
2
VIDEO
3
Sony a7III, Newton 900mm f4.5,2x95sec,ISO 3200
The comet has
now
every good components which a special comet
needs. An ionic antitail, an intnsive green coma
which appears between a bright shield and a nice
dust tail.
This appearance has now the estimated brigness
of
the magnitude
5,2 (mag)*
17. January 2023
5.00UT; Newton 900mm, f4,5, Sony a7III, 3x60sec; Iso
3200,
3x crop,
Germerswang/Fuerstenfeldbruck (Bavaria)
...good seeing but a
4-day moon sickle an the close range to Munich
let the comet tail appear weaker!
(Comet
~ 6.3
mag*
),
27. December 2022
4.56 UT;
Newton 900mm, f4,5, Sony a7III, 4x40sec; Iso
3200,
3x crop,,
Germerswang/Fuerstenfeldbruck (Bavaria)
...for half an hour clear sky, first images!
(
Comet
~7,5-8.0 mag*
)
*mag
= > light magnitude:
Up to
mag
+3 or +4
stars are
visible nearby cities with the naked eye, in very dark areas the
seeing limit can reach up to mag
+6-7.
The more higher numerical value is
given, the more weaker are the objects. E.g.
- 4,7 mag, Venus glittering;
- 1,0 Sirius,
brightest star; + 3,5
M31 Andromeda,
pale shiny oval)
           
All comet observations
from 2001 up to now ..
   
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Comet C/2022
E3,
ZTF
