Comet C/2021 A1 (Leonard)

February 13, 2021February 14, 2021 cepheids

Image:
Object: Comet C/2021 A1 (Leonard)
DATE-OBS: 2021-02-12T23:17:45
EXPTIME: 2250.00 (seconds)
SUBFRMS: 50
OBJCTRA: 14 01 27.281
OBJCTDEC: +49 38 36.060
Instrument:
Catalog: UCAC4
Bessell (B): +*.*, Bessell (V): +*.*
Bessell (R): +18.3, Bessell (I): +*.*
CCD: ATIK-383L+
FILTERS: R
TELESCOPE: C11, 1623.0mm
PRiSMv10, Astrometrica
Site:
ORIGIN: Cepheid Observatory, India, Vorion Scientific, India
SITELAT: +24:55:00:00
SITELONG:+75:33:58:99
Observers:
V.K.Agnihotri, B. Kumar, S. Mahawar, K.Vora
Remark:
Sky Clear. As per, Prof. Seiichi Yoshida comet@aerith.net, it may attend mag around +4.0 and go visible to eyes in mid of Dec-2021
End

COMET C/2021 A4 (NEOWISE)

February 10, 2021February 10, 2021 cepheids

Image:
Object: Comet C/2021 A4 (NEOWISE)
DATE-OBS: 2021-02-10T14:41:31
EXPTIME: 990.00 (seconds)
SUBFRMS: 22
OBJCTRA: 07 29 52.575
OBJCTDEC: +65 13 20.642
Instrument:
Catalog: UCAC4
Bessell (B): +*.*, Bessell (V): +*.*
Bessell (R): +14.9, Bessell (I): +*.*
CCD: ATIK-383L+
FILTERS: R
TELESCOPE: C11, 1623.0mm
PRiSMv10, Astrometrica
Site:
ORIGIN: Cepheid Observatory, India, Vorion Scientific, India
SITELAT: +24:55:00:00
SITELONG:+75:33:58:99
Observers:
V.K.Agnihotri, B. Kumar, S. Mahawar, K.Vora
Remark:
Sky Clear
End

Comet C/2021 A2

February 5, 2021February 5, 2021 cepheids

Image:
Object: Comet C/2021 A2
DATE-OBS: 2021-02-05T15:34:36
EXPTIME: 855.00 (seconds)
SUBFRMS: 20
OBJCTRA: 07 08 29.439
OBJCTDEC: -04 06 49.090
Instrument:
Catalog: UCAC4
Bessell (B): +*.*, Bessell (V): +*.*
Bessell (R): +14.2, Bessell (I): +*.*
CCD: ATIK-383L+
FILTERS: R
TELESCOPE: C11, 1623.0mm
PRiSMv10, Astrometrica
Site:
ORIGIN: Cepheid Observatory, India, Vorion Scientific, India
SITELAT: +24:55:00:00
SITELONG:+75:33:58:99
Observers:
V.K.Agnihotri, B. Kumar, S. Mahawar, K.Vora
Remark:
Sky Clear
End

Spectrum: Comet ISON

February 3, 2021February 3, 2021 cepheids

The spectrum below of the comet ISON shows how easy it is for amateurs to study astronomical spectra. This wonderful spectrum of ISON using a just an 80 mm refractor, simple Star Analyser grating, and a DSLR. It clearly shows the green glow from glowing Carbon (the so-called “Swan bands” – Wikipedia link) This image was captured from a rooftop in Rajasthan, and then processed in the RSpec software.

Review By Christof Wiedemair

January 30, 2021January 31, 2021 cepheids

“I had the great pleasure to work with Vikrant from Cepheid observatory India on the measurement of the parallax of the comet 46P/Wirtanen some time ago. He is a very kind person and he agreed to help us with our task right away. The data he contributed were very precise and so the result turned out accurately, too. Since then, I follow the activities of the Cepheid observatory group on their website and am always very impressed by their high versatility and their diligence. Keep it up, Vikrant & friends!”

Christof Wiedemair (Italy) teaches maths and physics at the “Nikolaus Cusanus” high school in Bruneck, South Tyrol, Italy. With a group of enthusiastic students he carried out a lot of astronomical observations and projects during the last twelve years with great success, thus winning also several international competitions.

To learn more about the group @astrocusanus visit astrocusanus.blogspot.com

Comet C/2013 X1 PanSTARRS

January 30, 2021January 30, 2021 cepheids

We carried out the spectroscopy of Comet C/2013 X1 PanSTARRS (Vmag = +9.67) as on 2016.01.09, using LHIRES-III spectrograph (23µm long slit, R=700, Angstrom /Pixel (A/P) =3.0) fixed on 0.20m SCT. The spectral image captured using Atik460ex cooled monochrome CCD coupled with LHIRES-III spectrograph. The image guided over spectrograph slit using Atik 383L+ monochrome CCD to get better S/N ratio. Comet seems enriched with C2,C2,CH+ & CN.
The spectral data corrected for instrument response and normalized. We used following software for different purposes.
APT Tool: LHIRES guiding/Histogram/Capture
Telescope control: Starry Night pro7 + EQMOD
CCDstack2.0: Image calibration
RSpec: Spectroscopy
Cepheids Astronomy Group, RBT, India.

Comet C/2013 US10 Catalina

January 30, 2021January 30, 2021 cepheids

We carried out the spectroscopy of comet C/2013 US10 Catalina (Vmag = +6.1) as on 20th December-2015, using LHIRES-III spectrograph (23µm long slit, R=700, Angstrom /Pixel (A/P) =3.0) fixed on 0.20m SCT. The spectral image captured using Atik460ex cooled monochrome CCD coupled with LHIRES-III spectrograph. The image guided over spectrograph slit using Atik 383L+ monochrome CCD to get better S/N ratio. Comet seems enriched with C2,C2,CH+,CO+ & CN.
The spectral data corrected for instrument response and normalized. We used following software for different purposes.
APT Tool: LHIRES guiding/Histogram/Capture
Telescope control: Starry Night pro7 + EQMOD
CCDstack2.0: Image calibration
RSpec: Spectroscopy
Cepheids Astronomy Group, RBT, India.

Photometry: WASP-43b

January 25, 2021January 30, 2021 cepheids

Exo-Planet, Class confirmed:
WASP-43b
Imaged/Calibration/Image solve:
PRiSM v11
Photometry and Data Fitting:
HOPS 2.6.8/Platform: Python 3.7.6
Instrument:
CCD: ATIK-383L+ mono
FILTERS: R
TELESCOPE: C11, 1623.0mm
Site:
ORIGIN: Cepheid Observatory, India, Vorion Scientific, India
SITELAT: +24:55:00:00
SITELONG:+75:33:58:99
Observers:
V.K.Agnihotri, B. Kumar, S. Mahawar, K.Vora
Remark:
Sky Clear
End

Photometry: HAT-P-21b

January 25, 2021January 26, 2021 cepheids

Exo-Planet, Class confirmed:
HAT-P-21b
Imaged/Calibration/Image solve:
PRiSM v11
Photometry and Data Fitting:
HOPS 2.6.8/Platform: Python 3.7.6
Instrument:
CCD: ATIK-383L+ mono
FILTERS: R
TELESCOPE: C11, 1623.0mm
Site:
ORIGIN: Cepheid Observatory, India, Vorion Scientific, India
SITELAT: +24:55:00:00
SITELONG:+75:33:58:99
Observers:
V.K.Agnihotri, B. Kumar, S. Mahawar, K.Vora
Remark:
Sky Clear
End

46P / Wirtanen – Parallax removal

January 21, 2021January 21, 2021 cepheids

December 31, 2018

The students of astronomy group of the language and high school in Bruneck, South Tyrol, estimated the distance of comet 46P using parallax method. We have pride to be part of this campaign. The project was completed by Christof Wiedemair and his students Vera Oberhauser, Lisa Niederbrunner, Pauline Hofer, Dominik, Maximilian and David.

Read: http://astrocusanus.blogspot.com/2018/12/46pwirtanen-entfernung-mittels-parallaxe.html

Few memorable pics!