astroenthusiast

Five channel RTL-SDR correlation testing issues. One, Log10 warrning due to no data being pushed through, even though an internal noise source set to constantly on. Second issue, the Acer mini-pc is under powered, even with a 2.4GHz processor with four cores. The correlation test, does show five RTL-SDR, KrakenSDR channels can correlate.

Five channel RTL-SDR correlation testing issues. One, Log10 warrning due to no data being pushed through, even though an internal noise source set to constantly on. Second issue, the Acer mini-pc is under powered, even with a 2.4GHz processor with four cores.

Replacement mini-PC, running Ubuntu 22.04. Hardware is Core I3, 1.27GHz processor, 16 GB RAM, 128 GB SSD drive and secondary 1 Terrabyte drive for data.

The two RTL-SDR interferometer is in survey mode.

Testing the interferometer with GNU Radio, out of tree (OOT), custom block build. Both two channel, KrakenSDR receivers are coherent and are in phase array.

Two, NooElec - SawBird H+1 LNAs along with two Wideband pass Preamps at 0.1 - 4 GHz. The bottom RTL-SDR, is the five channel KrakenSDR. To the left is a AGO 1420 MHz, band pass filter (BFP)

Two channel, RTL-SDR inteferometer build using the KrakenSDR receiver

Revised

Radio astronomy observatory build. Work in progress....

The reflection nebula NGC 2023, known as the Horsehead Nebula is in the constellation Orion. The Horsehead Nebula is also known by another name, Barnard 33. The red glow of mostly hydrogen molecular gas located behind Barnard 33, is ionized by the nearby bright star Sigma Orionis. The revised image was capture 12/11/2021 using a 165mm APO FPL-53 Air Spaced Triplet refractor, a CMOS one-shot color camera, at a temperature of -25 Celsius and an exposure time of 2 hours.

The Flaming Star Nebula - Starless

The SpectraCyber - CI will allow both 3-meter satellite mesh antenna dishes, configuration as a Radio Astronomy (basic) Inteferometer. Of course there is still math involved in the configuration. The SpectraCyber will allow me to move away temporarily from the complex Python & GNU radio programming, with the SDR receivers, balanced modulator/demodulator lock-in amplifier modules, and passive double -balanced mixers (low & high linear), shown below.