So far it's been a fun experiment, but I've run into something I don't understand. A few hours after the Sun passes through the FOV of the antenna, there is an increase in "noise" that gradually increases and then starts to decrease before sunrise. So far, I've only run one 24 hour drift scan (Chart below), but from what I've recorded in the early morning startups, this seems to be kind of normal.
The time from the software is only 12 hour if the times look strange to y'all.
I would think that, in the evening hours, a system sensitive to thermal radiation would display a decrease in emissions.
Ah well... much more research is needed!
@
PS - Jupiter is just too high in the sky to focus on right now .
So far it's been a fun experiment, but I've run into something I don't understand. A few hours after the Sun passes through the FOV of the antenna, there is an increase in "noise" that gradually increases and then starts to decrease before sunrise.
You may want to scan the entire sky and make a noise map to see if there are directional nodes as clues. Otherwise, when it comes to radio telescope anomalies at night time, some people would not discount this. http://500px.com/photo/18014587
Finally getting back to my radio telescope project after a bit of procrastination! ;-)
Initially, I was connecting to the satellite meter by removing the back of the box and connecting directly to the wiring inside, which is a pretty rookie way of doing things. Another problem was the piezo speaker, which has no off switch... a little annoying during all night scans!
This was my solution:
I replaced the aluminum back panel with an expanded foam piece. This allowed me to bring internal connections out without more expensive insulated terminals. A breadboard was mounted on the new back panel for conducting small experiments (not sure what kind just yet, but the space is there). I desoldered the piezo from the circuit board and wired the circuit to 2 connectors on the back. The piezo can be mounted on the breadboard and driven from the external terminals. (Can also be unplugged for quiet)
I also built a slightly modified version of the basic stamp circuit posted by Kenneth Kornstett for recording signals from the LNB. This can be driven from the meter terminals on the back.
Night scans have been a little disappointing so far. Planning a weekend-long scan through the galactic plane and specifically looking for Sagittarius A*. Don't have high hopes, but the experimenting is fun!
... Don't have high hopes, but the experimenting is fun! ...
Thanks for the updates. You might try the sun, too, over the next few days - it's been crackling a bit and fixing to fire off a few more flares, I reckon.
Comments
http://www.boeing.com/defense-space/space/bss/launch/980031_001.pdf
And their frequencies, C and Ku band...
http://www.lyngsat.com/
So far it's been a fun experiment, but I've run into something I don't understand. A few hours after the Sun passes through the FOV of the antenna, there is an increase in "noise" that gradually increases and then starts to decrease before sunrise. So far, I've only run one 24 hour drift scan (Chart below), but from what I've recorded in the early morning startups, this seems to be kind of normal.
I would think that, in the evening hours, a system sensitive to thermal radiation would display a decrease in emissions.
Ah well... much more research is needed!
@
PS - Jupiter is just too high in the sky to focus on right now .
You may want to scan the entire sky and make a noise map to see if there are directional nodes as clues. Otherwise, when it comes to radio telescope anomalies at night time, some people would not discount this. http://500px.com/photo/18014587
http://news.yahoo.com/see-moon-meet-saturn-bright-star-week-173012943.html;_ylt=AjRlc6.bctEy9HRIlo1JhtmsFWFH;_ylu=X3oDMTVxYmowZ2xqBGNjb2RlA2dtcHRvcDEwMDBwb29sd2lraXVwcmVzdARtaXQDQXJ0aWNsZSBNaXhlZCBMaXN0IE5ld3MgZm9yIFlvdSB3aXRoIE1vcmUgTGluawRwa2cDNjM4MGZlZTAtY2ZhMi0zY2M4LThmM2EtZDIxYzUzOWY2MmI1BHBvcwMxBHNlYwNuZXdzX2Zvcl95b3UEdmVyAzZmZWNhZTQxLWFkMDUtMTFlMi1iZmZmLWRiM2Q2MzA5Nzk4NA--;_ylg=X3oDMTJxdGFkcGt0BGludGwDdXMEbGFuZwNlbi11cwRwc3RhaWQDZjRiMGFmMTctMmE1NC0zZjA4LWE2MjMtNzM1NDY5ZjUxZGUyBHBzdGNhdANzY2llbmNlBHB0A3N0b3J5cGFnZQ--;_ylv=3
Initially, I was connecting to the satellite meter by removing the back of the box and connecting directly to the wiring inside, which is a pretty rookie way of doing things. Another problem was the piezo speaker, which has no off switch... a little annoying during all night scans!
This was my solution:
I replaced the aluminum back panel with an expanded foam piece. This allowed me to bring internal connections out without more expensive insulated terminals. A breadboard was mounted on the new back panel for conducting small experiments (not sure what kind just yet, but the space is there). I desoldered the piezo from the circuit board and wired the circuit to 2 connectors on the back. The piezo can be mounted on the breadboard and driven from the external terminals. (Can also be unplugged for quiet)
I also built a slightly modified version of the basic stamp circuit posted by Kenneth Kornstett for recording signals from the LNB. This can be driven from the meter terminals on the back.
Night scans have been a little disappointing so far. Planning a weekend-long scan through the galactic plane and specifically looking for Sagittarius A*. Don't have high hopes, but the experimenting is fun!
Amanda
Thanks for the updates. You might try the sun, too, over the next few days - it's been crackling a bit and fixing to fire off a few more flares, I reckon.
http://www.spaceweather.com/