arXiv preprint supplies field protocols for 0.1-arcsec coronal imaging during totality windows

The manuscript walks through instrument selection, including back-illuminated CMOS cameras, narrowband filters centered on 530.3 nm and 637.4 nm, and synchronized GPS timing to sub-millisecond accuracy. It specifies flat-field sequences taken immediately before and after third contact plus bias and dark frames bracketed within the same thermal cycle. These steps address the dominant systematic errors that have historically limited ground-based eclipse data relative to SDO/AIA.

Singh integrates modern computational tools such as multi-frame blind deconvolution and principal-component background subtraction to isolate faint coronal structures from scattered light. The text cross-references earlier successful campaigns at the 2017 and 2024 eclipses, showing how the same pipeline recovered propagating transverse waves with periods of 5-15 s that were marginally detected from space. This positions eclipse observations as high-temporal-resolution anchors for continuous but lower-resolution satellite records.

The chief limitation is the single-site, weather-dependent nature of any one deployment; the guide therefore advocates coordinated multi-longitude arrays and open data release within 48 hours. Future strengthening would require pre-registered observing plans and simultaneous airborne or high-altitude balloon corroboration to quantify residual atmospheric effects.