C/1995 O1 (HALE-BOPP)


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960516.05  I  9:  S   44.5  L  4.5  62  3-5  --  ------  ------  Johan Warell, Lars Hermansson 
Comment: Very difficult observation in twilight sky with comet at 3 degrees altitude. No details 
seen; comet round. Site: Sandvreten Observatory of Uppsala AmatörAstronomer, Sweden.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960608.00  S  7.4  SC  8.0  B  --  11  5  7  ------  ------  Johan Warell 
Comment: Comet round, lighter center, no tail. Hazy sky at horison. 3rd quarter Moon in E 
interfered. Site: Salangonisi, Paros, Greece.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960610.92  S  7.2  SC  8.0  B  --  11  13  7  ------  ------  Johan Warell
Comment: Comet round, lighter center, no tail. No Moon, clear dark sky. Site: Parikia, Paros, 
Greece.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960612.11  S  6.5: SC  20   B  --  8  10:  6 --  ------  ------  Timo Karhula
Comment: Found with a 8x20 seeker. In C90, 56x, the bright coma was elongated and contained an 
offset stellar nucleus. Comet Hale-Bopp was in the same binocular field of view as 22P/Kopff, 
which was inside the open star cluster NGC6774! Site: Yucay, Sacred Valley of the Incas, Peru. 
Altitude 2800 m.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960613.12  S  6.5: SC  --   E  --  --  10:  8 --  ------  ------  Timo Karhula
Comment: My first naked eye observation of the comet.  It appeared quite stellar. Confirmed with 
8x26 binoculars. ZLM +7.2. Site: Chillca, Inca Trail, Peru. Altitude 2800 m (9200 ft).


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960613.92  S  7.3  SC  8.0  B  --  11  13  6  ------  ------  Johan Warell
Comment: Comet Round, lighter center, no tail. Clear dark sky. Site: Parikia, Paros, Greece.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960615.18  S  6.5: SC  --   E  --  --  10:  8 --  ------  ------  Timo Karhula
Comment: Comet's movement since last night and the night before clearly noted. Hale-Bopp's 
appearance was rather constant during five consecutive nights. ZLM +7.7. Site: Runkuracay, 
Inca Trail, Peru. Altitude 3720 m (12200 ft).


Foto av Margareta Westlund 
den 16 juli 1996, 01:42 UT, 20 min, Fuji Super G 800 och 8.0/500 mm från St Etienne les Orques 
(södra Frankrike). Nära NGC6649 i Scutum.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960722.95  S  6.1  SC  8.0  B  4  20  25  3  ------  ------   Jörgen Danielsson
Comments: Huge, round coma, only a slight condensation and faint nucleus. A very distinct 
object on even a rather hazy and light polluted sky, but not because of it´s center but 
the shining, outer very large coma. Site: Färjestaden, Sweden.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960807.94  S  6.2  SC  8.0  B  --  11  9  6  0.25  130  Johan Warell
Comment: Fan shaped tail in PA 350-0-130 deg, brightest part in PA 50, longest part in PA 130. 
Site: Möckelmossen, Öland, Sweden. 


Foto av Johan Warell den 8 augusti 1996, 00:15-00:20 UT, med 135 mm 
Soligor f/4, Olympus OM-1, hyp TP 2415, från Möckelmossen, Öland.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960808.94  S  6.1  SC  8.0  B  --  11  10  6  1.0  130  Johan Warell 
Comment: Fan shaped tail in PA 350-0-130 deg, longest part in PA 130. Comet seen with naked eye. 
Site: Möckelmossen, Öland, Sweden. 


Foto av Margareta Westlund den 10 september 1996, 20:20 UT, 7 min, 
Kodak T-Max 400 och 3.5/135 mm från Bälinge, Sweden. Notera M 14 vid övre bildkanten.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960915.81  S  5.7  S   2.6  B  --  8  14  6  ------ ------  Timo Karhula
Comment: Observing site Virsbo, Sweden.


Date(UT)   MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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960918.84  S  5.9  SC  5.0  B  --  7   10  6  0.5  250:  Johan Warell
Comment: Fan shaped tail, opening angle ca 150 degrees. In .45-m L x111 the coma and inner tail 
showed a number of rays, faint and diffuse, in the tail direction. Altitude 5-10 degrees. 
Faintly seen with naked eye. Site: Sandvreten Observatory of Uppsala AmatörAstronomer, Sweden. 


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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961010.77  I  5.6  SC   --   E  --     --  --  --   --  --  Johan Warell
961010.77  --  --  --  8.0   B  -- 11  12  6   0.7     045  Johan Warell
Comment: Altitude about 10 degrees. Fan shaped tail, considerably more prominent than at 
earlier observations. ZLM = 6.7. Site: Sandvreten Observatory of Uppsala AmatörAstronomer, 
Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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961107.71  S  5.3  SC   5.0     B    --  10  --   7/  ------ Gustav Holmberg
Comment: Observing site Lund, Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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961115.70  S  5.0  SC   5.0  B     --  10  --   8   ------ Gustav Holmberg
Comment: Rather poor transparency. Observing site Lund, Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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961214.75  S  3.9  SC   8.0   B   -- 11 15  6  0.5      ---- Johan Warell
Comments: Comet located on bright sky only 5 degrees above W horizon; 4 day Moon in SW interfered. 
ZLM ca 5.0. Observing site Gamla Uppsala, Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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961215.67  S  4.0  SC   26   B     -- 8  11  6  1.1   50     Timo Karhula
Comments: Visible with naked eye. Moonlight and twilight interfered. Ref stars 67 and 70 Oph. 
Observing site Virsbo, Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970101.66  S  3.6  SC   2.6   B   -- 8  12: 7  1.5      --  Timo Karhula
Comments: Faintly seen with naked eye. Evening twilight interfered. Site: Virsbo, Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970101.68  I  3.7  SC   --    E   -  -- --  -  --       ------   Johan Warell
970101.68  -  --   --   8.0   B   -   11 12: 7  0.6     325-025  Johan Warell
Comments: Very conspicuous bright nucleus in well condensed coma. Fan shaped tail of about 60 deg 
opening angle. Reference stars Theta Ser (comb. mag 3.7) and 72 Oph (mag 3.7) at similar altitudes. 
Altitude 5-10 degrees. Site: F16, 10 km N of Uppsala, Sweden.


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970105.24  I  4.2  --   --    E   -  -- --  -  --   ------  R Persson
Comments:  Observed with naked eye. Perfect weather. Site: eastern Göteborg. Sun -15 degrees of 
altitude. Limiting magnitude about 4.7 at comet altitude (+15 degr.). Obvious coma and tail observed 
in 7x50 and 20x80 B. Comparision stars: 67,68,70 Oph, 63 Ser (not visible: 66 Oph). Strong 
resemblance with Comet Hyakutake (C/1996 B2) around 20 March 1996!


Date (UT)  MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970105.67  S  3.3  SC   2.6   B   -- 8  10: 7  1.0:   --   Timo Karhula
Comments: Evening twilight. Clearly brighter than Theta Ser. Comet seen with naked eye as
fuzzy star. Site: Virsbo, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970114.24  ! I  2.8 SC   --    E   -  -- --  -  --       ------ KG Andersson
970114.24  - -  --   --   8.0   B   -   20 11  5/ 1.5    341    KG Andersson
Comments: Tail about 0.5 degree wide at the end, curved towards west. Its western delimitation was 
lighter. Colour of comet generally bluish, tinged with yellow. A faint glow was glimpsed extending 
S of coma: "anti-tail"? Diameter of inner CC 3 arcmin. Light sky. Site: Solna, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970119.23  ! I  2.7 SC   --    E   -  -- --  -  --       ------ KG Andersson
970119.23  - -  --   --   8.0   B   -   20 12  5  2      335    KG Andersson
Comments: Tail similar in appearance to Jan 14, wide and curved, however the W delimitation not as 
evident. Diameter of inner CC 3 arcmin. Light sky. Site: Solna, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970119.26  ! I 2.8:  SC   --    E   -  -- --  -  --       ------ Johan Warell
970119.26  - -  --   --   8.0   B   -   11 10: 7  1     340-150  Johan Warell
Comments: Impressive bright yellowish nucleus in well condensed coma. Northward tail extended over 
a PA 170 degree span. The brightest spiky component extended toward PA 340, length 0.4 deg, the 
longest tail component toward PA 40 length 1 deg, and a short, fuzzy and faint 0.2 deg long 
"anti-tail" in PA 150. The comet was almost stellar to naked eye against a hazy light skyline. 
Altitude 12 deg, comp stars Zeta and Epsilon Aql. Site: Uppsala, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970124.22  ! S  2.5  SC   8.0   B   -- 20  11 5  1.5    335    KG Andersson
Comments: Yellowish. Diameter of central condensation 3 arcmin. Tail broad, rather straight. 
Moonlight interfered. Site: Solna, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970128.18  - S  2.5 SP   3.5   B   -  7  --  7  --     ------ M Westlund
Comments: In 90 mm f/11 M x80 parabolic envelope and condensed coma. 
Site: Gråmunkehöga E of Uppsala, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970129.22  ! S  2.3  SC   8.0   B   -- 20  12 5  2      335    KG Andersson
Comments: Yellowish. Diameter of central condensation 4 arcmin. Tail broad, rather straight. 
Moonlight interfered. Site: Solna, Sweden.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970129.25  ! I 2.6  SC  --    E   -  -- --  -  --       ------ Johan Warell
Comments: Very bright concentrated nucleus surrounded with large fainter coma, elongation towards 
N suspected. Bright sky from gibbous moon and light pollution. 
Site: Astronomical Observatory, Uppsala.


Date (UT)  n MM Mag Ref Aper Type f  x  dia DC taildg tailpa Observer
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970131.22  ! S  2.2  SC   8.0   B   -- 20  12 6  1.5    330    KG Andersson
Comments: Yellowish. Diameter of central condensation 4 arcmin, intensely yellow. Tail broad, 
diffuse, short, somewhat curved to the W (in contrast to Jan 24 and 29). Moonlight interfered. 
Site: Solna, Sweden.