Astrophotography

My photos of NGC891 & Comet A3 Tsuchinshan-ATLAS from LRO, Lichfield, 26/10/2024

By Admin October 28, 2024

Taken using my Seestar S50 telescope.

5 minute exposure

No filter.

C2023 A3 (Tsuchinshan-ATLAS)

By Admin

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Wavelength observed in hydrogen line radio astronomy

Wavelength observed by RADIO JOVE

Wavelengths covered by Ptarmigan Triffid Dipole Array used at LRO

Show field patterns at 1420 MHz, derive wave impedance vs frequency, explain why feed probes behave oddly near cutoff, and compare WR-650 vs WR-770 specifically for H-line work.