with our project completed, we worked on poster and presentations.

with our project completed, we worked on poster and presentations.

we went for a night trip to shoban mandir with club seniors. we made observations there

we went for a night trip to shoban mandir with club seniors. we made observations there

we recorded data from 11:30 to 13:00 hrs.we discussed the graph with club seniors . we have observed changes in amplitude of radio emissions from sun with time. we also observed that amplitude of radio emissions over a certain frequency range is somewhat constant with small peaks at certain frequencies.

we recorded data from 11:30 to 13:00 hrs.we discussed the graph with club seniors . we have observed changes in amplitude of radio emissions from sun with time ...

we recorded radio waves from sun between 13:00 to 14:00 hrs.

we recorded radio waves from sun between 13:00 to 14:00 hrs.

we started collecting data and recording it using speclab. we recorded radio waves emmited from hand.

we started collecting data and recording it using speclab. we recorded radio waves emmited from hand.

we went to the market for a stand to support our antenna. we bought it and fixed it with the antenna. in this way our radio telescope got ready. we are now ready to collect data from radio source and record it.

we went to the market for a stand to support our antenna. we bought it and fixed it with the antenna. in this way our radio telescope got ready. we ...

we then searched for a software to record the signals recieved from the reciever. we came across two software - radio sky pipe and speclab. we read about two. and decided to use speclab as it was more user friendly.

we then searched for a software to record the signals recieved from the reciever. we came across two software - radio sky pipe and speclab. we read about two. and decided ...

we connected the audio jack parallel to the buzzer . then attached stereo cable to the audio jack

we connected the audio jack parallel to the buzzer . then attached stereo cable to the audio jack

we worked on lose connections .we used better connectors this time . the connection was established as done previously. we added a switch between our power source to provide power as and when necessary. instead of Li ion batteries we used 2 9V batteries and battery holder to add stability to our power connection. we then checked the connection by placing our hand infront of it. we were overwhelmed to hear the sound of the buzzer. our telescope could detect the radio signal. next we have to connect it to PC using audio cable.

we worked on lose connections .we used better connectors this time . the connection was established as done previously. we added a switch between our power source to provide power as ...

we tested our dish connection by aligning it wit the existing dish antenna at hall2 canteen. as expected everything went well. the buzzer buzzed indiating we could receive the satellite signals. we are now sure that the receiver and sattelite finder are ok. the issue was with the connection. we have to fix connection problem

we tested our dish connection by aligning it wit the existing dish antenna at hall2 canteen. as expected everything went well. the buzzer buzzed indiating we could receive the satellite ...

we went to market and bought the audio jack and audio cable..

we went to market and bought the audio jack and audio cable..

we called the cable operator to seek some help but he could not come as he was out of town for some days. hence, no work on the telescope could be done. we however read of modification in satellite finder. we need to replace the buzzer circuit by an audio jack and then to PC through the audio cable. so we decided to go to the market next day.

we called the cable operator to seek some help but he could not come as he was out of town for some days. hence, no work on the telescope could ...

we met at noon and focused on sun. but no buzzing sound was heard. we tried again and again but it didnot work. we met again in the evening and tried to fix the problem by tightening the connectors from cable but it didnot work . we then thought of testing it with existing dishes in the campus but we didnot get permission. so we decided to call the mechanic next day

we met at noon and focused on sun. but no buzzing sound was heard. we tried again and again but it didnot work. we met again in the evening and ...

we have bought the batteries and connected it to the satellite finder. when we did so we heard a buzzing sound from the satellite finder when we placed our hand near the receiver. but after sometime no buzzing sound was heard on placing our hand near the receiver . we did not understand the reason for the malfunction. we thought it might work for solar radiations and decide to meet next day

we have bought the batteries and connected it to the satellite finder. when we did so we heard a buzzing sound from the satellite finder when we placed our hand ...

having assembled parts of the antenna, we worked on wiring. we attatched cables to lnb and satellite finder. we were about to connect the battery , when we found that we were one battery short. we had four Li ion batteries summing 12 V . but we needed 15 V Dc source. hence we decided to buy Li ion battery and then connect it to the receiver part of sattelite finder. Later in the night we had planetarium shows.

having assembled parts of the antenna, we worked on wiring. we attatched cables to lnb and satellite finder. we were about to connect the battery , when we found that we ...

having bought the equipment , we started work on it. we assembled parts of dish. the wiring is to left to be done which will be done tommorrow

having bought the equipment , we started work on it. we assembled parts of dish. the wiring is to left to be done which will be done tommorrow

we brought the components from the market. we are now ready to start the work on our design

we brought the components from the market. we are now ready to start the work on our design

we received mail from proffesor BC Joshi suggesting improvements in our receiver design. he suggested use of butterworth filter instead of simple RC filter which has a poor roll off. we read about butterworth fiter , cutoff frequency of filter. we decided to use butterworth low pass filter followed by butterworth high pass filter for our band pass filter design.

we received mail from proffesor BC Joshi suggesting improvements in our receiver design. he suggested use of butterworth filter instead of simple RC filter which has a poor roll off ...

No work related to project was done. We are waiting for components.

No work related to project was done. We are waiting for components.

We have already studied too much theory. So we considered that we will start working as soon as components arrive. Not much wok was done.

We have already studied too much theory. So we considered that we will start working as soon as components arrive. Not much wok was done.

we came up with the idea of making a mount for the telescope. we thought of using three layers of plywood. the lower layer being fixed. we attach a srew to the upper layer and a bolt to the middle layer.by moving the nut over the bolt , we can ensure the circular movement of antenna.

we came up with the idea of making a mount for the telescope. we thought of using three layers of plywood. the lower layer being fixed. we attach a srew ...

No work on on the project was done. We made telescopic observations and were taught about astrophotography.

No work on on the project was done. We made telescopic observations and were taught about astrophotography.

Today we discussed among ourselves about the modifications we are planning to do. We were confused with receiver circuit(as how to use inductor and capacitors effectively). We considered taking help from prof. BC Joshi of NCRA. Here are some links:
https://www.facebook.com/l.php?u=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DjBNcTn9BEy0&h=pAQE_zceq
https://www.facebook.com/l.php?u=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DoNxsripQZTQ&h=kAQGT4suQ
https://www.facebook.com/l.php?u=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DDkURL4mETT4&h=fAQHJ9woo
https://www.facebook.com/l.php?u=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D934_teo14Ik&h=8AQFOujbn

Today we discussed among ourselves about the modifications we are planning to do. We were confused with receiver circuit(as how to use inductor and capacitors effectively). We considered taking ...

having thought of a way to make our reciever , we started looking for the feasibility of our idea. we saw a video of 1420 MHz reciever.
https://www.youtube.com/watch?v=934_teo14Ik
https://www.youtube.com/watch?v=fsGRM024jRc
seeing this video we were assured that our idea was somewhat correct. However, there was a problem with the amplifier, the noise that the circuitry produces will add to the signal even if external noise is filtered. The internal noise may depend on the thermal conditions and the circuit design. we discussed about this with our seniors. There was two ways left, either we buy a low noise amplifier or discuss it with some electronics proffesor. However , this is a part of some modifications , we had planned.our basic design is ready and we are prepared to work as the components arrive.

having thought of a way to make our reciever , we started looking for the feasibility of our idea. we saw a video of 1420 MHz reciever.
https://www.youtube.com ...

today we discussed about how to make our reciever. we saw videos about design of low pass filter, amplifier, frequency mixer. we came up with thw idea that if we pass the signal through an array of amplifier and low pass filter , we could extract the low frequency signals with our main focus on 1420 MHz signal at which we get 21 cm hydrogen line.After ward ,our seniors gave us some questions.

today we discussed about how to make our reciever. we saw videos about design of low pass filter, amplifier, frequency mixer. we came up with thw idea that if we ...

today we discussed about modifications in our project. we thought to use 12 V Li acid battery as a power supply to power LNB and satellite finder.
we read about LNB modification
here are links from where we collected information:=
http://www.radio-astronomie.com/radtel.htm
http://www.scienceinschool.org/2012/issue23/telescope

today we discussed about modifications in our project. we thought to use 12 V Li acid battery as a power supply to power LNB and satellite finder.
we read about ...

we recieved mail from professor BC Joshi. He said that the list of equipments we had mailed him were fine.However, he suggested us to make a simple ASRT at beginning and then go for some modifications. He suggested some. we are waiting for the components to arrive. meanwhile, we are discussing about the modifications. We had a club level evaluation . We were asked to increase our efficiency and read about the circuitry of the reciever we are planning to make on our own.

we recieved mail from professor BC Joshi. He said that the list of equipments we had mailed him were fine.However, he suggested us to make a simple ASRT at ...

we were confused with the frequency range for radio astronomy and use of set top box in radio telescope. we discussed about it with seniors. still confused , we mailed to proffesor,BC Joshi asking solution to our problems.

we were confused with the frequency range for radio astronomy and use of set top box in radio telescope. we discussed about it with seniors. still confused , we mailed to ...

final team was alloted. we started reading about components of telescope.
here is the link with which we started.
http://www.astrosurf.com/luxorion/radioastronomy-rt.htm
https://public.nrao.edu/telescopes/radio-telescopes

final team was alloted. we started reading about components of telescope.
here is the link with which we started.
http://www.astrosurf.com/luxorion/radioastronomy-rt.htm
https://public.nrao.edu ...

Today we searched for some books in astronomy. They are uploaded.
Not much work was done.

Today we searched for some books in astronomy. They are uploaded.
Not much work was done.

1.Today we read about helical antenna radio telescope.
Not much resources are available in internet about it.
One useful link is
http://astro.abhinav.ac.in/
2. We realised that the we need to know more about frequency allocations.
3. Started searching about cables as we forgot to mention it in our list.
Resources not much available.

1.Today we read about helical antenna radio telescope.
Not much resources are available in internet about it.
One useful link is
http://astro.abhinav.ac.in/
2. We realised ...

21/5/2015-
Not much could be done due to internet problem.

22/5/2015-
there was presentatation in groups at club level. so no work was done on the project.

21/5/2015-
Not much could be done due to internet problem.

22/5/2015-
there was presentatation in groups at club level. so no work was done on the ...

Today we studied about individual components of radio telescope and made list of necessary components to be bought.Here are some sites we visited.
http://www.astrosurf.com/luxorion/radioastronomy-rt.htm (this was a very useful site)
http://www.astrosurf.com/audine/English/result/scan.htm
http://en.wikipedia.org/wiki/Phase-locked_loop http://www.satcritics.com/sc_tech_lnb.pdf http://www.passmyexams.co.uk/GCSE/physics/earth-based-telescopes-radio-telescopes.html#top http://ipnpr.jpl.nasa.gov/progress_report2/XVI/XVIO.PDF http://www.ece.umd.edu/~tretter/commlab/c6713slides/ch5.pdf http://www.gb.nrao.edu/electronics/edir/edir214.pdf https://uspas.fnal.gov/materials/08UCSC/mml17_nonlinear_circuit_elements.pdf http://www.ras.ucalgary.ca/radiotel/frontend.html
As there may be doubts about components(as we had) all the websites that were quite useful are listed here.

Today we studied about individual components of radio telescope and made list of necessary components to be bought.Here are some sites we visited.
http://www.astrosurf.com/luxorion/radioastronomy-rt ...