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OCCULTATION ACTIVITIES OF
JYOTIRVIDYA PARISANSTHA, PUNE INDIABY S.GURJAR
Jyotirvidya Parisanstha (JVP) , Pune India Oldest
association of Amateur Astronomers of India
Established in 1944
Presently active in Serious Astronomy observations
With 10” GOTO Newtonian Telescope mounted in our
own Dome + DSLRs
&
Popularization of astronomy
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Various Serious Observational activities:
Variable Star Observations: You may see the various variable stars observations accepted by AAVSO
Sky survey: for transients finding. We have data of 100 sq. deg. for 90 days last year to find the transients. Result: no transients found bright enough more than 11 mag.
Meteor Shower ZHR Counting
Comet Observations
Occultation photography and timing
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Occultation was initially a just attraction / fantasy in sky for us.
Few Occultations we observed as follows in following slides
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Occultation of Saturn by Moon (Oct 15,1997)Photograph by Sameer Godbole/Deepak Joshi
No efforts of timing the occultation were done
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Occultation of Aldebran by Moon: (Report)
Date : 6 Feb 1998 02:29:54 +0530 (gmt+05.30) from : Arvind Paranjpye to : Joan and David Dunham
Subject: Aldebaran occultation reports Dear David, Reporting here timings
of occultation of Aldebaran taken on 5 Feb 98 from iucaa (the coordinates
reported to you by N.C.Rana /Mridula. No personal equation was obtained.
The "ear and eye method" was used for timing the occultation. Celestron
C8 and a 3" refractor was used. Feb.5,98-UT Feb.6,98-IST With C8 :
19:38:15.95 01:08:15.95 With 3" : 19:38:15.81 01:08:15.81 The sky
condition was good but there were thin cloud. The lead role was played by
Aniruddh Deshpande, Suhas Gurjar of the local Amateur Astronomers
Association called Jyotirvidya Parisanstha Pune. By Arvind 21:04 UT 5/2/98
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
20th March 1998: Occultation of a 8.5 magnitude star SAO 162764 by Venus (- 4.6 magnitude)
The occultation was predicted using Planetarium Software “Red Shift”
We tried to record it using CCD camera from IUCAA (Inter university Center for Astronomy and Astrophysics, Pune)
Due to very bright Venus, CCD was washed away, but we observed Venus heading towards the star SAO 162764.
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
23rd April 1998:Double occultation of Venus and Jupiter by Moon. It was day time event, at around 2 to 3 pm.
Previous Night Day time Occultation
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
21st May 2004:Partial occultation of Crescent Venus and by Crescent Moon.
It was fount out that from our home city there was no Venus occultation going to happen. But, from 200 Kms north of us, it was going to happen. Thus, we travelled in between to Khodad, the world’s largest meter wavelength Radio Telescope GMRT location and captured this beautiful partial occultation of crescent Venus by similar shaped crescent moon.
The video was captured, … next slide.. One of those frames
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
On Feb 4, 2013: Asteroid 1243 Pamela occults with TYC 5507-01020-1 Star
Magnitude 8.4 and Asteroid magnitude 14.8 broken star trail showing occultation.
The start Time was in sync
with NIST. The total Exposure
time was 180 sec.
The cut in trail was calculated
to be 11 seconds.
Camera used Canon 7D DSLR
Cut in the trail
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
On Feb 15, 2013: Asteroid 2012 DA14 was to pass very close to earth, just some 28000 kms from earth’s surface. We captured its entire travel from south east to north azimuth.
flyby of asteroid 2012 DA14. Magnitude of Asteroid changed from 9.4 (while rising on Feb 15, at 23.31 IST) to 6.82 (on Feb 16 at 01.15 IST) and dropped back to around 3.30 am. This event was telescopic event even we could watch it using binoculars.
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Occultation on 10th Dec 2014 : TYC 1766-01017-1 by Bobrovnikoff was observed from 5 different locations using telescopes.
The locations were chosen keeping in mind to record the observations in order to predict the size and shape of the asteroid.
Only One team among Five was successful in recording the observation.
Location 3: 18.3899, 74.0138Observers: Ram Karanje, Harsha Kulkarni, Sushen JoshiEquipments: Skywatcher 8 inch Reflector on GOTO + Canon 5D Mark II.
This was recorded by trailing the star field and finding the break in star trail of TYC 1766-01017-1
Image in next slide
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Oct 3. 2015:
It was decided that JVP need to take an opportunity to join Paul Maley, USA to understand the accurate ways of timing the occultations.
First time efforts were done to video record the occulation of HIP 12740 by asteroid Dione from Delhi.
Three of us arrived in Gurgaon Delhi, with 10” equatorial GOTO mount EQ6, Newtonian telescope, mounted with Video Camera (ordinary Security type video camera) + DVR + Laptop controls. We arrived two days in advance to set up our equipment as well as to visit Paul’s proposed site, so that Paul need not waste his time in searching the site. Also to try to make few more stations.
Laptop and DVR times were NIST sync. We could not make arrangements for GPS time stamping.
The results of the occultation time very much matched with Paul Maley’s results, though real time didn’t match.
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Our Plans:
We have very good working member strength. Almost 100 young
students interested in astronomy observations are available.
We are planning to make at least 10 sets of equipment including,
appropriate imaging lens system + high sensitivity CCD cameras
0.00001 lux sensitive + GPS time stamp insertion system + DVRs.
One trial Camera is already ordered, and will be in India shortly
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
Our Plans:
With more than 10 sets of equipment and equal
number of trained teams, we plan to cover maximum
possible occultations happening in India, within
capability of our sets , at least near by to our home
town. With 10+ stations at right angle line to the
asteroid path, we will try to sufficient observational
records, to enable us / IOTA to profile the asteroids.
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
What we need:
•Finance: We earn through various programs and spend for
such activities. The funds raised by these means will not be
sufficient to make our plans the reality very fast.
• We will try to get some finance from various Astronomy
related organizations in India like Indian Astronomical Society,
Inter University Center for Astronomy and Astrophysics etc.
•Not sure yet, if we can get some assistance from
International organizations
Occultation Activities of
Jyotirvidya Parisanstha, Pune India
What we need:
Guidance:
•We are sure, we will get full guidance from IOTA, David
Dunham, Paul Maley, Brad Timerson, Dave Herald