Sprzęt na GigaHerce
proszę o porady (ew. ceny)
Grzesiu,

Jeśli chodzi o radioastronomię to już do 3GHz można to i owo "usłyszeć" (obejmuje pasmo L i część S) no i oczywiście widmo przerzucić do komputera. Chyba, że jest jeszcze coś o czym nie wiem, np. modulacja.

Oto jakie drgania można tu wyłapać:


Substance Rest Frequency Protected Segment Notes (1)
Hydrogen (HI) 1420.406 MHz 1370.0 - 1427.0 MHz 2),3)
Hydroxyl radical (OH) 1612.231 MHz 1606.8 - 1613.8 MHz 3),4)
Hydroxyl radical (OH) 1665.402 MHz 1659.8 - 1667.1 MHz 4)
Hydroxyl radical (OH) 1667.359 MHz 1661.8 - 1669.0 MHz 4)
Hydroxyl radical (OH) 1720.530 MHz 1714.8 - 1722.2 MHz 3),4)
Methyladyne (CH) 3263.794 MHz 3252.9 - 3267.1 MHz 3),4)
Methyladyne (CH) 3335.481 MHz 3324.4 - 3338.8 MHz 3),4)
Methyladyne (CH) 3349.193 MHz 3338.0 - 3352.5 MHz 3),4)

1) If Note 4) or Note 2) are not listed, the band limits are Doppler-shifted frequencies corresponding to radial velocities of +/- 300 km/s (consistent with line radiation occurring in our galaxy).

2) An extension to lower frequencies of the allocation of 1400-1427 MHz is required to allow for the Doppler shifts for HI observed in distant galaxies.

3) The current international allocation is not primary and/or does not meet bandwidth requirements. See: ITU-R Radio Regulations (Tablecool for more detailed information.

4) Because these line frequencies are also being used for observing other galaxies, the listed bandwidths include Doppler shifts corresponding to radial velocities of up to 1000 km/s. It should be noted that HI has been observed at frequencies redshifted to 500 MHz, while some lines of the most abundant molecules have been detected in galaxies with velocities up to 50 000 km/s, corresponding to a frequency reduction of up to 17%.


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