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Member, Observer, Sunspot Mentor & CHOICE course Instructor at
The American Association of Variable Star Observers Observers (AAVSO), Observer Code: DARB
No of Variable Star Observation: 26 (Visual-26, DSLR-00, CCD-00)
No of Sunspot Observation: 916
Observer Profile
Name: Aritra Das
Observer Code: DARB
Site: My roof, Western Horizon is blocked 35 degrees, Rest directions are blocked by 17 degrees by trees. City skyglow to North. No visibility beyond 67.00S Declination.
Limiting Magnitudes: 13V in all directions.
Location: Kanchrapara, West Bengal, India. 22.94N, 88.42E
Weather/Seasonal Factors: Most of the year sky is clear, generally in late Winter to early Summer (Northern Hemi). From Late May to Early Nov clouds disturbed a bit. Very difficult in July-Aug.
Observing Frequency: Sunspot- Regular, Variable - Weekly Twice
Experience: Sunspot- 3 Yrs, Variable-6 Months
Equipment:
Telescope:
a. 6 inches (150mm) Newtonian Reflector without diagonal, in Dobsonian Mount
b. 4 inches (100mm) Newtonian Reflector without diagonal, in Dobsonian Table Top Mount
Software: Stellarium
Eyepieces: Premium Plossl 25mm (1.25") 52° field, Premium Plossl 9mm (1.25") 52° field.
Monocular: 25x10 Celestron
Filters: For Sunspot, I use 1000 Oaks Solar Filter & I don't use any filters when visually observing variables.
Camera: Nikon D5600
Primary Program: Miras, SRA
Citizen Scientist at
International Astronomical Search Collaboration (IASC)
Preliminary Asteroid Candidates:
#1. P11h6vc, New Horizons (S. Acharya, A. Kakkar, V. Kumbhare, A. Raka, D. Acharya, A. Das, S. Basu), 06/15/21 <SAC0126>
With my guru Dr. Debiprasad Duari, Director, M.P. Birla Planetarium, Kolkata. The snap was taken on 29th September 2019 after the M.P. Birla Memorial Award Ceremony - 2019, while I was a Student of the Evening batch (2018-19) for Astronomy at M.P. Birla Planetarium, Kolkata.
Honors
Honors
AAVSO Sunspot Award 2021 (100 Observations)
AAVSO Sunspot Award 2023 (500 Observations)
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